Quick Answer

To score sourdough bread, turn the cold, proofed loaf onto parchment paper or a baking surface and use a sharp bread lame, razor blade or thin knife to make one confident cut across the dough immediately before baking.

For a primary expansion score, cut approximately ¼ to ½ inch deep. Hold the blade at about a 30- to 45-degree angle if you want the dough to form a raised ear. Hold the blade more upright for a simple opening without a pronounced ear.

Scoring gives expanding gases a controlled place to escape during baking. Without an effective score, the loaf may burst along the side, spread unevenly or develop limited oven spring.

What Does It Mean to Score Sourdough Bread?

Scoring means cutting the surface of a shaped loaf immediately before it goes into the oven.

The cut creates an intentional weak point in the dough’s outer surface. As the loaf heats and expands, the score opens and allows the bread to rise in a controlled direction.

A functional score can help:

• Direct oven spring
• Prevent random bursting
• Improve loaf shape
• Create a raised ear
• Control where the crust opens
• Add a decorative finish
• Make the loaf easier to identify

Scoring is both practical and artistic, but the functional cut should always come first.

Why Does Sourdough Need to Be Scored?

During the first part of baking, the gases trapped inside sourdough expand rapidly.

The yeast may also remain active briefly before the heat stops fermentation. At the same time, moisture inside the loaf turns to steam.

This expansion creates pressure beneath the dough’s outer surface.

If the surface has no place to open, the loaf may split at its weakest point. That could be:

• Along the side
• Near the base
• Around the seam
• Across the top in an uneven crack

A well-placed score gives that pressure a planned escape route.

Does Scoring Create Oven Spring?

Scoring does not create fermentation strength, but it helps properly fermented dough use its available oven spring.

Oven spring depends on several factors:

• Proper fermentation
• Strong gluten development
• Good shaping
• Surface tension
• Appropriate proofing
• Sufficient steam
• High initial baking temperature
• Effective scoring

A perfectly scored loaf can still bake flat if it is overproofed or structurally weak.

Likewise, a strong, well-fermented loaf may burst unpredictably if the score is too shallow or poorly placed.

Scoring works with the dough’s existing strength. It cannot replace it.

When Should You Score Sourdough?

Score the loaf immediately before baking.

The oven and baking vessel should already be fully preheated.

A good sequence is:

1. Preheat the oven and baking vessel.
2. Remove the dough from the refrigerator.
3. Turn it out of the proofing basket.
4. Brush away excess flour if needed.
5. Make the score.
6. Transfer the loaf into the baking vessel.
7. Cover and bake promptly.

Do not score the loaf and then leave it sitting at room temperature for an extended period.

Once cut, the dough begins relaxing and spreading through the opening.

Should Sourdough Be Cold Before Scoring?

Cold dough is usually easier to score.

Refrigerated dough is:

• Firmer
• Less sticky
• Easier to transfer
• Better able to hold its shape
• Less likely to drag beneath the blade
• Easier to score decoratively

This is one reason many bakers bake sourdough directly from the refrigerator after a cold proof.

Room-temperature dough can still be scored successfully, but it may require a lighter touch and a very sharp blade.

What Tool Should You Use to Score Sourdough?

The best scoring tool is one that is extremely sharp and easy to control.

Common options include:

• Bread lame
• Razor blade
• Serrated lame
• Very sharp paring knife
• Thin utility blade intended for food use

A bread lame is a handle designed to hold a razor blade. It gives you greater control and keeps your fingers farther from the cutting edge.

Straight Bread Lame

A straight lame holds the blade flat.

It works well for:

• Simple expansion scores
• Cross patterns
• Upright cuts
• Decorative scoring
• Boules and batards

Curved Bread Lame

A curved lame bends the blade slightly.

It can make it easier to cut beneath the surface at an angle and create a raised flap or ear.

Either style can work. Blade sharpness and technique matter more than the handle shape alone.

Can You Score Sourdough With a Knife?

Yes, but the knife must be very sharp.

A dull knife may:

• Drag the dough
• Tear the surface
• Deflate the loaf
• Create a jagged score
• Fail to cut deeply enough

A thin razor blade usually creates a cleaner score than a standard kitchen knife.

A serrated knife may work in an emergency, but it is harder to create a smooth, controlled cut.

How to Score Sourdough Bread Step by Step

Step 1: Fully Preheat the Oven

Preheat the oven and Dutch oven or baking vessel before removing the loaf from the refrigerator.

The vessel should be hot enough to provide a strong initial burst of heat.

Depending on your baking method, preheating may take approximately 30 to 60 minutes.

Step 2: Prepare the Work Area

Have everything ready before turning out the dough:

• Parchment paper
• Bread lame or razor
• Oven mitts
• Dutch oven
• Optional flour or stencil
• Optional spray bottle

Working efficiently helps prevent the dough from warming and spreading.

Step 3: Turn Out the Dough

Place parchment paper or a transfer sling over the proofing basket.

Carefully invert the basket so the smooth side of the dough faces upward.

Lift away the basket and liner.

If the dough sticks, loosen it gently instead of pulling aggressively.

Step 4: Remove Excess Flour

Brush away heavy patches of flour if they interfere with the score.

A thin coating of flour is fine and may help the design stand out.

Excess flour can make the surface harder to see and may prevent the blade from moving smoothly.

Step 5: Plan the Score

Decide where the loaf should open before touching it with the blade.

For a basic batard, use one long score slightly off-center.

For a boule, you might use:

• One curved score
• A cross
• A square
• A single slash
• A leaf-style expansion pattern

The primary score should support the loaf’s shape and desired expansion.

Step 6: Hold the Blade Securely

Grip the lame firmly but without squeezing.

Keep your fingers away from the cutting edge.

Position the blade at the angle needed for your chosen score.

Step 7: Make One Confident Cut

Move the blade quickly and smoothly through the surface.

Avoid using repeated short sawing motions.

A hesitant score is more likely to drag the dough or create a rough opening.

Step 8: Bake Immediately

Transfer the scored loaf into the preheated baking vessel.

Cover it and begin baking promptly.

How Deep Should You Score Sourdough?

A primary expansion score should generally be approximately ¼ to ½ inch deep.

The ideal depth depends on:

• Dough hydration
• Proofing level
• Loaf shape
• Blade angle
• Surface tension
• Decorative design
• Desired expansion

A score that is too shallow may seal during baking before the loaf has fully expanded.

A score that is too deep may weaken the loaf and cause it to spread.

Decorative scores should be much shallower than the main expansion score.

They are intended to mark the surface, not create the main opening.

What Angle Should You Use to Score Sourdough?

The blade angle changes how the score opens.

For a Sourdough Ear

Hold the blade at approximately a 30- to 45-degree angle to the dough’s surface.

Instead of cutting straight down, slice slightly beneath the outer skin.

This creates a thin flap of dough that can lift and curl during baking.

For a Simple Open Score

Hold the blade closer to a 90-degree angle.

This creates a direct cut that opens outward more evenly.

An upright score may produce a clean opening without a dramatic raised ear.

Neither angle is automatically better. The best choice depends on the look and loaf shape you want.

How to Get a Sourdough Ear

A sourdough ear is the raised ridge that forms along one side of an angled score.

To improve the chance of forming an ear:

• Build good surface tension during shaping.
• Avoid overproofing the dough.
• Chill the loaf before scoring.
• Use a very sharp blade.
• Hold the blade at a shallow angle.
• Score slightly off-center.
• Make a clean, continuous cut.
• Bake with adequate steam.
• Use strong initial heat.

The score should cut beneath the surface rather than straight down.

A blade angle of approximately 30 to 45 degrees helps create the flap that becomes the ear.

Does Every Sourdough Loaf Need an Ear?

No.

A large ear is a stylistic preference, not a requirement for good bread.

A loaf can be properly fermented, flavorful and well baked without developing a dramatic ear.

Some scoring patterns are intended to open evenly rather than form one raised flap.

The most important goals are:

• Controlled expansion
• Good loaf structure
• Proper baking
• A crumb that suits how the bread will be used

Do not judge a loaf’s quality by the ear alone.

Where Should You Score a Batard?

For a batard, make one long cut along the loaf’s length.

Place the score slightly off-center rather than directly down the middle.

Begin near one end and continue toward the other, leaving a small uncut section at both ends.

A slightly curved score can follow the natural shape of the loaf.

For a pronounced ear:

• Hold the blade at a shallow angle.
• Keep the score relatively close to the surface.
• Use one smooth motion.
• Avoid cutting directly down the center.

A center score tends to make both sides open evenly. An off-center angled score encourages one side to lift.

Where Should You Score a Boule?

A boule can be scored in several ways.

Functional patterns include:

• A cross
• One long slash
• A square
• A curved crescent
• Four connected cuts
• A hashtag pattern

A round loaf expands in multiple directions, so the score should give it enough room to open without weakening the entire structure.

A cross is especially beginner-friendly because it allows even expansion across the top.

Functional Scoring vs. Decorative Scoring

Functional and decorative scoring serve different purposes.

Functional Scoring

The functional score is the deeper cut that controls expansion.

It should be:

• Deep enough to open
• Placed strategically
• Made immediately before baking
• Appropriate for the loaf’s shape

Most loaves need at least one functional score.

Decorative Scoring

Decorative scores are shallow cuts used to create patterns.

Popular designs include:

• Leaves
• Wheat stalks
• Vines
• Flowers
• Geometric lines
• Initials
• Seasonal patterns

Decorative cuts should usually be shallow so they do not compete with the main expansion score.

If every cut is deep, the loaf may open in several directions and lose its intended shape.

Can Decorative Scoring Replace the Main Score?

Sometimes, but only if the design includes enough functional openings.

A pattern such as a cross or square may serve both decorative and functional purposes.

A series of tiny leaf cuts usually does not provide enough expansion space by itself.

When in doubt, include one deeper expansion score in addition to the shallow design.

Why Does My Sourdough Score Close Up?

A score may close or seal during baking when:

• The cut is too shallow.
• The dough is underproofed and expands too forcefully elsewhere.
• The dough is overproofed and lacks oven spring.
• The blade drags instead of cutting cleanly.
• The surface is wet or sticky.
• The loaf sits too long after scoring.
• The score is poorly positioned.
• There is insufficient steam.

A shallow score may look visible before baking but fuse together as the outer surface begins setting.

Use a sharp blade and cut decisively to the proper depth.

Why Does My Sourdough Burst on the Side?

Side bursting usually means the loaf expanded through an unintended weak point.

Possible causes include:

• Score too shallow
• Score too short
• Poor score placement
• Underproofed dough
• Weak seam
• Insufficient steam
• Crust setting too quickly
• Loaf baked seam-side down with an unsealed seam

If the dough is underproofed, internal pressure can become especially strong during baking.

Improving proofing and scoring together often corrects the problem.

Why Does the Blade Drag Through the Dough?

Blade dragging can occur when:

• The blade is dull.
• The dough is warm.
• The surface is sticky.
• The dough is overproofed.
• The blade moves too slowly.
• The baker uses repeated sawing motions.
• The score begins at the wrong angle.

Try using a new razor blade and scoring directly from the refrigerator.

A quick, confident movement usually creates a cleaner result than a slow, cautious one.

Why Does My Sourdough Deflate When I Score It?

Some slight relaxation after scoring is normal.

Significant deflation may indicate:

• Overproofed dough
• Weak gluten structure
• Too much fermentation
• Excessively deep scoring
• Aggressive handling
• A blade that drags
• Poor shaping tension

A properly proofed loaf should tolerate one clean score without collapsing.

If the dough deflates dramatically, the underlying issue is usually fermentation or dough strength rather than scoring alone.

Can You Score Sourdough Too Deeply?

Yes.

A very deep cut can:

• Weaken the loaf
• Cause excessive spreading
• Separate the dough
• Produce an uneven shape
• Expose too much interior dough
• Reduce upward expansion

The blade should cut through the surface tension without slicing deeply into the center of the loaf.

Aim for approximately ¼ to ½ inch for the primary score.

Can You Score Sourdough Too Shallowly?

Yes.

A shallow functional score may:

• Close during baking
• Fail to direct expansion
• Cause side bursting
• Limit ear development
• Create jagged crust cracks

Decorative cuts are intentionally shallow, but the main expansion score must be deep enough to remain open.

Should You Flour Sourdough Before Scoring?

Flouring the surface is optional.

A light dusting of rice flour can:

• Highlight decorative patterns
• Reduce surface stickiness
• Create visual contrast
• Make the score easier to see

Too much flour may:

• Dry the crust
• Create a chalky appearance
• Hide the dough’s surface
• Interfere with blade movement

For a rustic loaf, you may leave the surface lightly floured from the banneton.

For a darker, shinier crust, brush off more flour before baking.

Can You Wet the Blade Before Scoring?

Some bakers lightly wet or oil the blade to reduce sticking.

This may help with warm or high-hydration dough.

However, a fresh, sharp razor usually performs well without added moisture.

Do not apply so much water or oil that it drips onto the loaf.

Should You Score Before or After Adding Water or Ice?

Score the loaf before adding water, ice or another steam source to the baking vessel.

A safe sequence is:

1. Turn out the loaf.
2. Score it.
3. Place it into the Dutch oven.
4. Add the chosen steam source, if your method uses one.
5. Cover immediately.
6. Bake.

Be cautious when adding ice or water to a very hot vessel because steam can cause burns.

How Steam Affects Scoring

Steam keeps the outer surface flexible during the early stage of baking.

This gives the score time to open before the crust hardens.

Without enough steam, the surface may set too quickly, which can:

• Restrict oven spring
• Prevent the score from opening fully
• Create a thick crust
• Cause random cracking
• Reduce blistering

A covered Dutch oven traps moisture released by the dough and usually provides enough steam without additional water.

How Proofing Affects Scoring

The way a score opens can reveal information about fermentation.

Underproofed Dough

Underproofed dough may:

• Feel tight
• Resist the blade
• Expand violently
• Burst beyond the score
• Create an exaggerated ear
• Produce a deep opening
• Develop dense crumb with large tunnels

Strong opening does not always mean perfect fermentation.

Properly Proofed Dough

Properly proofed dough usually:

• Holds its shape
• Cuts cleanly
• Opens steadily
• Develops controlled oven spring
• Produces a balanced ear or expansion
• Maintains structure

Overproofed Dough

Overproofed dough may:

• Feel soft and fragile
• Spread when turned out
• Drag beneath the blade
• Deflate after scoring
• Open very little
• Produce limited oven spring

When the dough lacks strength, no scoring technique can fully restore it.

Common Sourdough Scoring Mistakes

Using a Dull Blade

A dull blade tears and drags the dough.

Replace razor blades frequently.

Scoring Too Slowly

A slow cut may stick or create a jagged line.

Use one confident movement.

Cutting Straight Down When Trying to Create an Ear

A vertical score opens evenly but may not create a lifted flap.

Use a shallower angle for an ear.

Cutting Too Shallowly

A shallow expansion score may reseal during baking.

Cut through the outer skin to the proper depth.

Cutting Too Deeply

An overly deep cut can weaken the loaf and encourage spreading.

Keep the score near the surface.

Adding Too Many Deep Scores

Multiple deep cuts compete for expansion.

Choose one main opening unless the design is specifically intended to expand in several directions.

Letting the Dough Sit After Scoring

Scored dough begins relaxing immediately.

Bake it as soon as possible.

Blaming Scoring for Every Flat Loaf

Flat bread is often caused by fermentation, weak gluten or shaping problems.

Scoring can guide expansion, but it cannot create structural strength.

A Beginner-Friendly Scoring Pattern

For a batard:

1. Place the loaf lengthwise in front of you.
2. Hold the blade at approximately a 30- to 45-degree angle.
3. Position it slightly left or right of center.
4. Make one long, smooth cut along the loaf.
5. Leave a small section uncut at both ends.
6. Bake immediately.

For a boule:

1. Position the loaf in front of you.
2. Hold the blade upright.
3. Make one cut across the center.
4. Rotate the loaf 90 degrees.
5. Make a second cut to form a cross.
6. Bake immediately.

These simple patterns provide reliable expansion without requiring advanced decorative technique.

How to Practice Sourdough Scoring

Scoring improves through repetition.

To build confidence:

• Start with one simple pattern.
• Use the same loaf shape repeatedly.
• Keep fermentation and hydration consistent.
• Use a fresh blade.
• Photograph the loaf before and after baking.
• Note the blade angle and score depth.
• Compare how each score opens.
• Change only one variable at a time.

Practicing one basic score teaches you more than switching between complicated designs on every loaf.

Razor Blade Safety

Razor blades are extremely sharp.

Use them carefully.

• Keep fingers behind the cutting edge.
• Store blades in a protected container.
• Do not leave loose blades on the counter.
• Keep blades away from children and pets.
• Dispose of used blades in a sealed, puncture-resistant container.
• Do not attempt to catch a falling blade.

A bread lame offers more control than holding a bare razor directly.

Megan’s Baking Tip

Score with purpose. Before the blade touches the dough, decide exactly where the cut will begin and end. A quick, confident score usually opens better than several hesitant cuts. I also recommend learning one simple score first and repeating it until you understand how angle, depth and proofing affect the final loaf.

Frequently Asked Questions

How deep should I score sourdough bread?

A functional expansion score should generally be approximately ¼ to ½ inch deep. Decorative cuts should be much shallower.

What angle should I use to score sourdough?

Use approximately a 30- to 45-degree angle to create an ear. Use a more upright angle for a simple opening that expands evenly.

Can I score sourdough with a knife?

Yes, but a very sharp razor blade or bread lame usually creates a cleaner cut with less dragging.

Should sourdough be cold when scored?

Cold dough is generally easier to score because it is firmer and holds its shape better.

Why does my sourdough deflate after scoring?

The dough may be overproofed, structurally weak or scored too deeply. Blade dragging and aggressive handling can also cause deflation.

Why did my score not open?

The score may have been too shallow, the dough may have been overproofed or the crust may have set too quickly because of insufficient steam.

Why did my loaf burst on the side?

The dough may have been underproofed, the score may have been too shallow or the crust may have hardened before expansion was complete.

Do I need to score sourdough baked in a loaf pan?

Usually, yes. A simple lengthwise score can help the loaf expand evenly, although some pan loaves naturally split without scoring.

Can I make decorative scores without a main score?

Only when the decorative pattern includes enough deeper cuts to control expansion. Small shallow designs usually need a separate functional score.

How do I get a large sourdough ear?

Use well-fermented dough with strong shaping tension, score cold dough at a shallow angle and bake with adequate heat and steam.

Does a good ear mean the bread is properly proofed?

Not necessarily. Underproofed dough can also create a dramatic ear. Evaluate the crumb, loaf shape and fermentation process together.

How often should I replace my scoring blade?

Replace it whenever it begins dragging or tearing the dough. A razor may remain sharp for several loaves, but performance depends on the blade and storage conditions.

Final Thoughts

Scoring sourdough gives expanding dough a controlled place to open during baking.

For a reliable functional score:

• Use cold, properly proofed dough.
• Work with a sharp blade.
• Decide on the score before cutting.
• Use one confident motion.
• Cut approximately ¼ to ½ inch deep.
• Adjust the blade angle based on the desired result.
• Bake immediately with strong heat and steam.

A shallow angled cut can encourage a raised ear, while a more upright score creates a balanced opening.

Remember that scoring is only one part of the process. Fermentation, gluten development, shaping and proofing determine how much strength and gas the loaf brings to the oven.

The best score simply gives that strength the right place to expand.