Sourdough Belgian Waffles: Crisp, Tangy and Fluffy

Sourdough Belgian waffles are thick, deep-pocketed waffles made with sourdough starter, flour, milk and eggs, with a gentle tang and crisp edges. An overnight sponge builds flavor while a little instant yeast keeps the waffles reliably light, so the batter is ready for the waffle iron in the morning.

Ingredients

1 cup (240 g) sourdough starter discard, preferably 100% hydration
1 cup (240 ml) water, lukewarm
2 cups (250 g) all-purpose flour
1 tablespoon (12 g) granulated sugar
½ teaspoon (1.5 g) instant yeast
½ cup (120 ml) milk, at room temperature
2 large eggs (about 100 g without shells), at room temperature
6 tablespoons (85 g) unsalted butter, melted and cooled until warm, not hot
1 teaspoon (5 ml) vanilla extract
¾ teaspoon (4.5 g) fine salt
½ teaspoon (2.3 g) baking soda
Neutral oil or softened butter, as needed to grease the waffle iron

Instructions

Make the overnight sponge. In a medium bowl, whisk the sourdough discard with the water until mostly smooth. Add the flour, sugar and instant yeast, then stir until no dry flour remains. The mixture will be thick and sticky. Cover the bowl and leave it at room temperature for 30 minutes, then refrigerate it for 8 hours. This short room-temperature start gets fermentation going; the refrigerator slows it while keeping the dairy-free sponge cool overnight.
Bring the sponge toward room temperature. In the morning, take the bowl from the refrigerator and let it stand for 20 minutes. It may show small bubbles and smell pleasantly fermented, but it does not need to double in size. Meanwhile, set out the remaining ingredients and preheat a Belgian waffle iron according to its manufacturer’s directions.
Finish the batter. In a separate bowl, whisk together the milk, eggs, melted butter and vanilla. Pour this into the sponge and stir until combined; a few small lumps are fine. Sprinkle the salt and baking soda over the batter and fold them in evenly. The batter should be thick but scoopable. Rest it for 10 minutes while the iron finishes heating. Avoid vigorous beating, which can make the waffles tougher.
Cook the waffles. Lightly grease the hot waffle iron if its surface is not nonstick or the manufacturer recommends greasing. Add enough batter to cover the lower grid without filling the pockets to the very top; the exact amount depends on your iron, so start with about ¾ cup (180 ml) for a large Belgian-style plate. Close the lid and cook until the waffle is well browned and releases easily, usually 4 to 5 minutes. Because the batter contains eggs, the USDA FSIS safe minimum for egg dishes is 160°F (71°C); check the center with a food thermometer. Adjust the cook time if needed to reach that temperature.
Repeat and keep them crisp. Transfer each finished waffle to a wire rack rather than stacking it on a plate, which traps steam and softens the crust. Continue with the remaining batter, regreasing the iron lightly when necessary. Most irons make six waffles from this batch, though plate size and how generously you fill it affect the yield. Serve as they come off the iron, or hold them in a single layer in a 200°F (95°C) oven for a short time.

Tips

Use a starter with predictable hydration. The quantities assume a starter fed with equal weights of flour and water. If your discard is unusually stiff, whisk in an extra tablespoon or two of water; if it is very loose, the batter may need a tablespoon of flour. Small differences are fine, but a large change in consistency can affect how the waffles spread and brown.
Discard can be cold, but mix it smoothly. Straight-from-the-fridge discard works in the sponge. Break up any firm clumps with the water before adding flour so the sponge ferments evenly. Discard that smells sharply unpleasant, has visible mold or has unusual pink or orange coloring should be thrown away rather than used.
Mind the waffle iron’s fill line. Belgian irons vary in depth and size. Too much batter leaks out of the sides and leaves a messy, uneven waffle; too little leaves bare patches. Start with less than you think you need, then add a little more to the next waffle if the grid is not covered.
Do not stack hot waffles. Steam gathers between them and turns crisp edges soft. A wire rack works best, or hold them briefly in a low oven in one layer. For a dairy-free version, use an unsweetened dairy-free milk and a plant-based butter alternative; flavor and browning may differ slightly.

Serving Suggestions

For a classic breakfast, top each warm waffle with butter and maple syrup. The deep pockets hold syrup well, while the slight sourdough tang balances sweet toppings. Fresh berries, sliced bananas, peaches or a spoonful of fruit compote add freshness; a little yogurt or whipped cream makes the plate more substantial. If using salted butter, taste before adding extra salt to any savory topping.

These waffles also work with savory accompaniments. Try a fried or scrambled egg, sautéed mushrooms, sliced avocado, or crisp bacon alongside the waffle rather than piling everything into its pockets. For a more filling brunch, serve them with fruit and eggs, or offer a mix of sweet and savory toppings so everyone can assemble a plate to suit their appetite. Keep sauces on the side if you want the waffle edges to stay crisp.

Variations

More pronounced sourdough flavor: Use discard that has been refrigerated for a few days, provided it is still in good condition, and let the sponge ferment in the refrigerator for up to 12 hours. The flavor may become tangier, but the timing in the recipe facts is based on an 8-hour chill. Avoid adding extra baking soda to mask the tang; too much can leave a soapy taste and weaken the flavor.

Whole-wheat waffles: Replace up to ½ cup (60 g) of the all-purpose flour with whole-wheat flour. The waffles will taste nuttier and may be a little denser. If the batter seems unusually stiff after adding the final ingredients, loosen it with milk a tablespoon at a time rather than pouring in a large amount at once.

Spiced or citrus waffles: Add ½ teaspoon (1 g) ground cinnamon or a little finely grated lemon or orange zest when you mix in the salt and baking soda. Keep additions modest so the sourdough flavor stays noticeable and the batter cooks evenly.

Chocolate-chip waffles: Fold ⅓ cup (60 g) mini chocolate chips into the finished batter just before cooking. Avoid scattering chips directly onto the waffle iron because they can melt onto the plates and make cleanup difficult. For a less sweet batch, skip the sugar in the sponge and use fruit or syrup at the table.

Storage and Reheating

Let leftover waffles cool on a rack, then refrigerate them within 2 hours in an airtight container. They keep for 3 to 4 days in the refrigerator. For longer storage, freeze cooled waffles in a single layer until firm, then move them to a freezer-safe bag with parchment between layers; use within about 2 months for best texture. Thawing in the refrigerator is optional.

To reheat, place refrigerated or frozen waffles in a toaster or toaster oven until hot and crisp. A 350°F (175°C) oven also works: arrange them in one layer and heat until warmed through. Reheat leftovers to 165°F (74°C), the USDA FSIS guidance for leftovers, checking the center with a food thermometer. A microwave warms them quickly but makes the crust soft, so use it only if crispness is not important.

Frequently Asked Questions

Can I make these waffles without instant yeast?
Instant yeast is included to make the overnight rise dependable, especially when discard is not very active. You can omit it, but the sourdough sponge may not ferment enough overnight to give the same lift, and results will depend on the strength of your starter. For a reliable batch, keep the small amount of yeast.

Can I use active sourdough starter instead of discard?
Yes. Use the same weight of active starter, ideally at 100% hydration. A recently fed starter may ferment the sponge more quickly or develop a stronger rise, but the refrigerated overnight timing still works. The recipe uses instant yeast as a backup leavener, so there is no need to change the quantity.

Can I make the batter entirely in the morning?
You can, but the overnight sponge is what gives the waffles their developed sourdough flavor. For a same-day version, mix the sponge and leave it at room temperature until bubbly, about 1 to 2 hours depending on room temperature and starter activity, then continue with the recipe. Keep the milk and eggs refrigerated until you are ready to mix them in.

Why are my waffles soft instead of crisp?
They may need a little more time in the iron, or the iron may not have been fully heated before the batter went in. Let each waffle cook until deeply golden and easy to release, and avoid stacking finished waffles. A rack or brief hold in a 200°F (95°C) oven lets steam escape and helps preserve the crisp exterior.

Can I refrigerate the finished batter and cook it later?
For the best lift and texture, cook the batter after its 10-minute rest. If you need to pause, refrigerate it promptly in a covered container and use it within 24 hours. The baking soda begins reacting once it is mixed into the wet batter, so waffles made later may be less airy; fold gently before cooking and do not leave egg-and-milk batter at room temperature for an extended period.

What if I do not have a Belgian waffle iron?
A standard waffle iron will work, but it makes thinner waffles with smaller pockets. Use the amount of batter recommended for your appliance and start checking earlier, since a shallow iron may cook faster. The batter flavor stays the same, though the final texture will be less thick and the yield may be higher.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).