How to Get an Ear on Sourdough

The ear is the ridge of crust that peels back along a score and bakes into a crisp, dark lip. It is not a separate technique so much as the visible result of several things going right at once: a dough with good strength, a tightly shaped loaf, a proof that leaves some energy for the oven, a shallow angled cut and enough steam for the crust to stay soft while the loaf expands.

When one of those is off, the score either seals over or opens flat. This guide breaks down each factor, gives specific blade angles and depths, and lists what to change when the ear refuses to appear.

Why an ear forms

When a loaf enters a hot oven, the gas inside expands quickly and the dough rises; bakers call this oven spring. A score creates a weak point where that expansion escapes. If the cut is made at a shallow angle, one side of it becomes a thin flap of dough lying over the other. As the loaf swells, that flap is pushed up and outward, and because it is thin, it dries and browns into a sharp ridge.

A vertical cut, by contrast, opens symmetrically into a wide, flat valley. Both are fine bread, but only the angled cut produces an ear.

Blade angle, depth and stroke

Use a razor blade on a lame, ideally a curved one, or a very sharp serrated knife. Hold the blade almost flat, about 30 to 45 degrees from the surface of the loaf, so you are slicing under the skin rather than straight down. Aim for a depth of 6 to 12 mm (¼ to ½ in).

On a batard, make one long cut about 1 to 2 cm (½ to ¾ in) to one side of the center line, running almost the full length of the loaf. Move in a single smooth, quick stroke. Hesitating or sawing back and forth drags the dough and leaves ragged edges that seal over.

• Angle: 30 to 45 degrees to the surface
• Depth: 6 to 12 mm (¼ to ½ in)
• Position: slightly off center on a batard
• Motion: one decisive stroke, no sawing

Shaping and proof matter as much as the cut

The ear needs a tight skin to lift against. A loosely shaped loaf spreads sideways instead of pushing up, so the score opens flat. Shape firmly and give the dough a cold proof, which also firms it up so the blade glides cleanly.

Proof level is the other half. An overproofed loaf has used most of its gas and has little spring left, so the score barely opens. A loaf that is very slightly underproofed, one that springs back fairly quickly when pressed but leaves a small dent, has more energy for the oven and tends to give a bolder ear. Too underproofed, and the loaf may burst in an unplanned spot.

Steam and heat

In the first part of the bake, the crust must stay soft and moist so the loaf can expand and the flap can lift. A covered Dutch oven traps the loaf's own steam and does this automatically. Preheat the pot at 250°C (480°F) for about 45 minutes, bake covered for 20 minutes, then uncover, lower the oven to 230°C (450°F) and bake 20 to 25 minutes more, until the crust is deep brown.

Without enough steam, the crust sets before the loaf finishes rising, locking the score shut. With too low an oven temperature, oven spring is slow and weak.

Diagnosing a missing ear

Look at the cut after baking. If it barely opened and looks sealed, the loaf was probably overproofed, the score was too shallow or the oven lacked steam. If the cut opened wide and flat with no lift, the blade was held too vertically. If the loaf burst along the side instead of the score, the cut was too shallow or the dough underproofed.

Change one thing at a time. Most bakers find that a lower blade angle and a firmer shape make the biggest difference, followed by baking straight from the fridge.

Getting a cleaner score

Dust the loaf lightly with rice flour before scoring. The flour makes the cut stand out against the dark crust and helps the blade move without sticking. Change blades often; a dull blade drags even on cold dough.

If the dough is very wet or sticky, score it right after turning it out of the basket, before it starts to relax and spread on the parchment.

Common questions

Can I get an ear on a round boule?

Yes, though it is easier on a batard. On a boule, a single curved cut along one side or an angled square pattern can produce an ear on each edge. Keep the blade low and the cuts confident.

Does whole wheat sourdough get an ear?

It can, but it is harder. Whole grain doughs are weaker and spring less. Strong shaping, a cold proof and a well-timed bake still give a modest ear, especially with up to about 30 percent whole wheat.

Is an ear a sign of a better loaf?

Not on its own. It shows good tension and oven spring, which often go with an open crumb, but a loaf without an ear can taste every bit as good. Treat it as a useful signal, not a requirement.