Sourdough Discard Focaccia: How to Use Discard in Focaccia

Discard is for flavor, not for lift

Sourdough discard is the portion of starter you remove before a feeding — unfed, past its peak, and pleasantly sour. It carries lots of flavor and some helpful acidity and extensibility, but its yeast is tired, so it will not reliably raise a dough on its own. The honest way to use it is as a flavor and texture ingredient inside a dough that gets its rise elsewhere.

For focaccia that means the best results come from adding discard to an otherwise normal yeasted dough. You get the tang and complexity people love about sourdough, with the dependable, airy crumb that a little commercial yeast guarantees — no waiting to see whether a sluggish starter will perform.

How much discard, and adjusting hydration

A good range is 100–200 g of discard for a standard sheet-pan focaccia (roughly 400–500 g of flour). Less than that is barely noticeable; much more starts to weigh the crumb down and make it gummy, because discard is soft and acidic.

Most discard is kept at around 100% hydration — equal weights of flour and water. So 200 g of discard is about 100 g flour and 100 g water. To keep your dough at its target hydration, subtract those amounts from the recipe: remove roughly 100 g flour and 100 g water when you add 200 g of discard. If you skip this step the dough just runs wetter, which for focaccia is forgiving but still worth accounting for.

If your starter is kept at a stiffer or wetter ratio, adjust proportionally. The goal is simply that the flour and water hiding inside the discard are counted as part of the recipe, not added on top of it. Our hydration guide covers the math if you want to be precise.

Do you still need yeast?

For a predictable focaccia, yes — keep a small amount of instant or active dry yeast (about half of what you would normally use is plenty, since the discard adds a little activity and a lot of flavor). This is the most reliable, beginner-friendly route and works on a same-day or overnight schedule.

You can make a no-added-yeast version, but then you are really making a naturally leavened focaccia, and you need an active, recently fed starter at its peak — not old discard. If that is what you want, follow a dedicated sourdough focaccia method with proper bulk fermentation and a cold retard, and expect a longer, less predictable timeline. Cold, tired discard will not rise a loaf by itself.

Timing: same-day or overnight

With a little yeast in the dough, discard focaccia is flexible. On a same-day schedule, mix, do a few stretch-and-folds during a 2–4 hour bulk rise, then pan, dimple and bake — the discard deepens the flavor even in a few hours.

For more complexity, give it an overnight cold ferment: mix, let it start at room temperature, then refrigerate the dough overnight. The long, cold rest lets the discard’s acidity develop a rounder, tangier flavor and improves the crumb. See the same-day vs overnight guide for how the two schedules compare.

Either way, finish like any focaccia: generous olive oil in the pan and in the dimples, a confident dimpling once the dough is relaxed and puffy, and a hot bake until the base is crisp and the top is deep gold.

Discard focaccia vs naturally leavened focaccia

A discard focaccia is a yeasted focaccia flavored with sourdough — quick, reliable, and a great way to use up starter you would otherwise toss. A naturally leavened focaccia is raised entirely by an active starter, with no commercial yeast, and rewards you with more sourness and a more blistered crumb in exchange for a longer, more demanding process.

Neither is better; they answer different questions. If you have discard to use and want focaccia tonight or tomorrow, make the discard version. If you want a pure sourdough bake and have an active starter and time, make the naturally leavened one.