Sourdough bakers face a recurring kitchen ethics question: what to do with the discard? You feed the starter daily, removing half each time, and throwing that away feels wasteful. The internet has produced approximately 5,000 sourdough discard recipes. Pizza is the best of them – the discard fermenting overnight in pizza dough produces depth of flavor that yeasted doughs cannot match.
This is the home-baker pizza dough technique that uses 200 g of sourdough discard or active starter, ferments 6-8 hours at room temp, then cold-ferments overnight for extra flavor. Topping is canonical Margherita – tomato, mozzarella, basil, olive oil. Bakes in 6-8 minutes at maximum home oven heat (260 C) on a pizza steel. The result is better than any chain delivery, and uses up what would have been compost.
Quick Read — At a Glance
| Yield | 2 pizzas (12 inch) |
| Total time | 8 hours 15 min (6-8h ferment + 15 cook) |
| Difficulty | Intermediate |
| Texture | Crispy leoparded bottom, chewy crust, melty cheese |
| Critical | Stretch dough by hand, never roll – rolling kills the airy crust structure |
Why Discard Works
Sourdough discard contains the same wild yeast and lactobacillus cultures as active starter. The discard ferments slightly slower than freshly fed starter (because it has been depleted) but still produces enough activity to leaven the dough over 6-8 hours.
The discard contributes both flavor (lactic acid tang) and rise. Active starter (fed and bubbly) works equally well and rises faster. Either way, the dough doubles in volume during bulk fermentation. The cold overnight ferment afterwards is what produces the depth.
Pizza Steel vs Stone
Pizza steel ($60-100, 1/4 inch thick) conducts heat 10x faster than ceramic stone. The result: leoparded char on the bottom crust in 6-8 minutes vs 12-15 with stone. Steel is the most worthwhile upgrade for home pizza makers.
Heat at maximum oven temperature (typically 260 C / 500 F) for 45 minutes before baking. Steel must be fully heat-soaked, not just hot. Stone works acceptably but produces softer-bottomed pizza.
Ingredients
- Dough:
- 200 g (3/4 cup) active sourdough starter or discard
- 400 g (3 1/4 cups) bread flour
- 250 ml (1 cup) water (warm to room temp)
- 12 g (1 tbsp) fine sea salt
- Olive oil for the bowl
- Topping (per pizza):
- 100 g (3.5 oz) low-moisture mozzarella, torn
- 125 ml (1/2 cup) crushed San Marzano tomatoes
- Fresh basil leaves
- Extra virgin olive oil
- Salt + black pepper
Making It
- Mix dough. Starter + flour + water + salt. Knead 5 min until smooth.
- Bulk ferment. Oiled bowl, covered. 6-8 hours room temp until doubled.
- Divide + cold ferment. 2 dough balls. Refrigerate 1+ hour (overnight better).
- Preheat 260 C (500 F). Pizza steel or stone, 45 min.
- Stretch by hand. 30 cm circle. Never roll – kills air.
- Top. 4 tbsp sauce thin layer, torn mozzarella, salt and pepper.
- Bake 6-8 min. Leopard-spotted crust, bubbling cheese.
- Finish. Fresh basil + olive oil drizzle after baking. Slice + serve.
Frequently Asked Questions
What is discard?
Sourdough starter requires daily feeding – you remove half before each feed. That removed half is “discard”. Full of yeast and lactobacillus, ferments beautifully. Discard pizza uses what would be compost.
How long bulk ferment?
6-8 hours room temp (22 C). Dough doubles. Longer = more sour. Overnight cold ferment after dramatically improves flavor (Tony Gemignani standard).
Steel or stone?
Steel dramatically better. 10x faster heat conduction. Leoparded char in 6-8 min. $60-100. Stone OK but slower, softer bottom.
What mozzarella?
Low-moisture (not fresh in water). Brands: Galbani, BelGioioso. Tear by hand for visual + uneven melt. Avoid pre-shredded (anti-caking agents).
Sources
- Serious Eats — Sourdough Pizza — Kenji method.
- King Arthur Baking — Sourdough Pizza — American bakery standard.
- USDA FoodData Central — Nutritional data.
Each slice (1/8 pizza) contains roughly 285 calories, 10 g protein, 8 g fat, 42 g carbs.
Please note: Contains gluten and dairy. Not suitable for these allergies. Consult a dietitian.
Tom Nakamura
Tom learned to cook from his obaachan during summers in Japan - pickling daikon at the kitchen table, watching her stir miso into broth without ever measuring. Later, family trips with cousins took him through markets in Bangkok, Shanghai, and Hanoi, and the food stuck with him. His writing focuses on making authentic Asian techniques accessible to home cooks without diluting the technique or the culture that defines them. He handles Chinese, Japanese, Korean, Thai, Vietnamese, Indian, and Middle Eastern recipes at the publication.
