Using a Razor (Lame) for Sourdough Scoring

How to score sourdough with a razor (rasiermesser/lame) to control oven spring and create attractive patterns. Practical tips, angles, and common mistakes.

Why This Technique?

Scoring with a razor (lame) directs oven spring, prevents random bursts, and creates controlled ear formation and aesthetic patterns.

A clean, precise cut lets the expanding gases escape where you want them, producing predictable ear formation and fuller oven spring. Scoring also relieves surface tension at the right point so the crumb develops evenly instead of tearing unpredictably during the first minutes of bake [1][2].

โœ“ Clean, controlled ear development โœ“ Reduced risk of random surface tears โœ“ Fine detail for decorative patterns โœ“ Minimal dough disturbance when done correctly

๐ŸŽฌ Video Tutorial

Scoring Sourdough: Lame Techniques ๐Ÿ“บ Sourdough Techniques โฑ๏ธ 6:12

Demonstration of lame angles and cuts for different loaf types

Common Mistakes

โŒ Dull blade or multiple sawing motions

Problem: Jagged tears instead of clean ears; weak visual result

Solution: Use a fresh blade or replace disposable razor regularly; one confident stroke per cut [1].

โŒ Cutting too deep or vertical on soft high-hydration dough

Problem: Can deflate loaf or cause large uncontrolled bulges

Solution: Use a shallower, lower-angle slice and practice on test doughs to learn behavior [2].

โŒ Scoring on a dry surface or leaving cuts to dry

Problem: Cuts will seal and not open in oven

Solution: Score immediately before baking; use steam or lidded pot to keep crust supple [2].

Alternative Techniques

Sources

  1. [1]
    The Perfect Loaf โ€“ The Perfect Loaf โ€“ Link
  2. [2]
    Plรถtzblog โ€“ Plรถtzblog โ€“ Link