Sourdough Discard Crepes: Thin, Tangy, Overnight

Crepes are the discard recipe you mix at night and cook at breakfast. There is almost no other use for your starter jar where the overnight rest does this much work: the flour hydrates fully, the discard’s acid softens the gluten to near-nothing, and bubbles from enzymatic activity thin the batter into the consistency of heavy cream. By morning you have something that pours like paint, swirls to the edge of a hot pan with a flick of the wrist, and sets into a lacy, flexible crepe in 45 seconds per side.

This is a batter recipe more than a cooking recipe. The pan technique is simple — hot pan, thin pour, flip, done — but only if the batter is right. Discard makes the batter right with less effort than any other method, because its acid and enzymes do overnight what a blender and a rest would do in an afternoon.

Discard here means unfed, past-peak starter from the back of your fridge. 100 percent hydration (equal weights flour and water), pH somewhere between 3.5 and 4.5. Not ripe starter. Not peaked leaven. The wild yeast is mostly spent; the lactic and acetic acid are fully developed. Acid is what you want.

Why Discard Crepes Are Better

Three things happen when discard replaces a chunk of the flour and water in a crepe batter.

Gluten goes slack. Crepes fail when they are tough or rubbery — both are gluten problems. Discard’s low pH plus mild protease activity weakens gluten overnight in a way no amount of blender blitzing can match. The result: a crepe that tears only if you are careless with the flip, not because the structure is stiff.

Hydration is automatic. Flour needs 30 to 60 minutes of rest to fully hydrate; overnight discard batter gives you 8 to 12 hours. Every flour particle is saturated, enzymes have cleaved some of the starch into soluble sugars, and the batter pours evenly without lumps.

Flavor deepens. Lactic acid carries a creamy tang; acetic acid adds a sharper note. In a crepe, where the ingredient list is barely five items, this is the difference between a blank canvas and a crepe that actually tastes like something on its own. It also browns better — organic acids accelerate Maillard reactions, so you get more of those lacy brown spots that make a good crepe photograph.

The batter hits the pan thin — roughly the viscosity of heavy cream. Thicker than milk, thinner than pancake batter. If your morning batter has firmed up overnight, you thin it back with milk, not water, to keep the richness.

Ingredients

Makes 12 to 14 crepes, about 8 inches across.

Total batter weight: roughly 920 g. Yields about 12 generously thin or 14 very thin 8-inch crepes.

For savory crepes, omit the sugar and vanilla. You can also substitute 30 g of the all-purpose flour with buckwheat flour to head toward a Breton galette.

Method

Step 1 — Mix the night before. In a large bowl, whisk 150 g flour, 15 g sugar (if making sweet), and 3 g salt to combine. In a separate bowl or large measuring cup, whisk 200 g discard, 150 g eggs, and 200 g of the milk (hold back 160 g to adjust in the morning) until smooth. Pour the wet into the dry and whisk until just combined — a few small lumps are fine; they will hydrate overnight. Whisk in 40 g melted butter and 5 g vanilla last.

Step 2 — Cover and refrigerate 8 to 12 hours. The batter should look slightly thicker than heavy cream at this stage. Cover tight and move it to the fridge. Overnight is the minimum; up to 24 hours works. The batter will develop faint bubbles and a more pronounced tang as discard acids deepen.

Step 3 — Thin to pouring consistency. In the morning, whisk in the remaining 160 g of milk, a little at a time, until the batter coats the back of a spoon but drips off cleanly when tilted. If you over-thin, add a tablespoon of flour and let rest 10 minutes. Target viscosity: a ribbon off the whisk disappears into the surface within 2 seconds.

Step 4 — Heat the pan. Set an 8 or 10-inch nonstick or well-seasoned carbon-steel pan over medium heat for 3 to 4 minutes. Test with a drop of water: it should skitter and evaporate within 2 seconds. Brush lightly with melted butter — just enough to gloss the surface, not pool. Too much fat and the first crepe comes out greasy.

Step 5 — Pour and swirl. Lift the pan off the heat. Pour about 50 to 60 g of batter (roughly 1/4 cup) into the center. Immediately tilt and swirl the pan in a circular motion so the batter spreads to the edges. The pan should be off heat during the swirl — heat cooks the batter before it can spread.

Step 6 — Cook, flip, finish. Return the pan to the heat. Cook 45 to 60 seconds on the first side, until the edges lift from the pan and the surface dulls from glossy to matte. Slide an offset spatula under an edge, lift, and flip with your fingers or a fast flick of the spatula. Cook 20 to 30 seconds on the second side — enough to set, not to brown heavily. Transfer to a plate.

Step 7 — Stack with parchment. As crepes come off the pan, stack them directly on a plate. Each crepe keeps the next warm. A sheet of parchment between crepes helps if you are stacking high or reheating later.

Doneness cues: lacy golden-brown spots on the first side, paler and set on the second, edges slightly crisp, crepe still pliable enough to fold without cracking. If the first side is pale, your pan is not hot enough — bump it up a notch. If it is browning in under 30 seconds, back off by a notch.

Fillings and Variations

Classic French sweet. Butter and sugar. Lemon wedge. That is the recipe. Fold into quarters and eat with your hands.

Nutella and banana. Spread warm crepe with Nutella, lay sliced banana across the middle, fold, and dust with powdered sugar.

Savory ham and gruyere. Skip the sugar and vanilla in the batter. Off heat, lay a thin slice of ham and a handful of grated gruyere on a hot crepe, fold into quarters, return to the pan to melt the cheese for 15 seconds.

Buckwheat galette variation. Replace 30 g of the flour with 30 g buckwheat flour. Buckwheat has no gluten, so the crepe is more fragile — handle gently on the flip.

Discard age. Refrigerated discard is good for about a week. Older, more acidic discard makes a sharper crepe; cut to 150 g if you want to soften the tang.

Storage. Crepes keep 3 days in the fridge, stacked with parchment and wrapped tight. Freeze up to 2 months. Reheat in a dry pan for 20 seconds per side, or microwave a single crepe for 15 seconds.

Same-morning version. If you did not plan ahead, blend everything on high for 60 seconds and rest the batter at room temperature for 60 minutes before cooking. The overnight rest produces a better crepe, but same-morning works if breakfast is already 15 minutes late.

For more ways to empty the jar, see our sourdough discard recipes roundup. Crepes are a natural weekend pair with our sourdough discard waffles and weekday sourdough discard scones. If you are still building a starter, our how to make sourdough starter guide walks through the first two weeks.