How to Use a Lame – Scoring Sourdough for Better Oven Spring

Practical guide to using a bread lame (scoring tool) to control oven spring, direct expansion, and create attractive ear patterns on sourdough loaves.

Why This Technique?

Scoring controls where the loaf expands in the oven, encourages a defined ear, and prevents random tearing.

Scoring with a bread lame creates a deliberate weak point in the dough's surface so internal gas can expand predictably during oven spring. That predictable expansion preserves crumb structure and creates an 'ear' when the cut opens and dries quickly, improving both oven spring and aesthetic result [1][2].

✓ Directs oven spring to a planned seam ✓ Improves crumb structure by avoiding chaotic tearing ✓ Creates signature ears and decorative patterns ✓ Helps release steam at a controlled point

When to Use

✓ Suitable for:

  • • Immediately before placing the loaf in the oven, after final proofing
  • • Loaves with a taut skin (boules and batards)
  • • Cold-proofed loaves removed from the refrigerator

✗ Not suitable for:

  • • Very under-proofed dough that resists shaping → Scoring can heal and prevent oven spring; better to proof longer
  • • Extremely slack, over-proofed dough → Dough may collapse rather than open; adjust fermentation

Step by Step

Preparation:

Ensure the dough surface is taut. If proofed in a banneton, invert quickly onto [parchment paper](https://amzn.to/49SkAv0) or your peel so the skin is smooth.

1

Hold the lame like a pen with a relaxed wrist; support the blade with two fingers for control.

👀 Lame positioned above the dough, parallel to the loaf surface.
2

Make decisive, swift cuts — don't saw. Place the blade where you want expansion to begin and pull or push with a single fluid motion.

👀 A clean incision, not a ragged tear.
3

Score to a depth of roughly 3-7 mm depending on loaf size; aim to cut the skin without deflating the loaf interior.

👀 Shallow to moderate incision exposing a lighter interior line.
4

After scoring, transfer immediately to a preheated Dutch oven or cast iron pot or hot baking stone to capture steam.

👀 Loaf placed in hot baking vessel, ready to bake.

🎬 Video Tutorial

How to Score Bread Like a Pro 📺 Baking Channel ⏱️ 5:12

Demonstration of scoring techniques for sourdough loaves

Common Mistakes

❌ Using a dull blade or sawing motion

Problem: Creates ragged tears instead of a clean incision; prevents a proper ear

Solution: Replace blades frequently and make one decisive cut with the [lame](https://amzn.to/3LKDRH0)

❌ Scoring too deep

Problem: Deflates loaf and reduces oven spring

Solution: Aim for 3–7 mm depth depending on loaf size; practice on scraps

❌ Scoring after letting dough sit

Problem: Surface dries and heals, which inhibits opening

Solution: Score immediately before placing dough into the oven

❌ Uneven pressure or hesitant cuts

Problem: Leads to inconsistent openings and tearing

Solution: Relax the wrist, commit to a single motion, and practice the grip

Alternative Techniques

Use a sharp knife or razor blade

If you don't have a [lame](https://amzn.to/3LKDRH0), a new disposable razor or very sharp chef's knife can work

Controlled seam shaping

For gentle directional spring without dramatic ears

No-score 'skin tear' (for rustic loaves)

When a rustic, cracked look is desired or for over-hydrated doughs

Sources

  1. [1]
    The Perfect Loaf – The Perfect Loaf – Link
  2. [2]
    Plötzblog – Plötzblog – Link