--- title: "What Size Proofing Basket Do You Need for Sourdough?" canonical: "https://starbreadbakery.org/what-size-proofing-basket-for-sourdough/" author: "Starbread Admin" published: "2026-09-08T09:00:00+00:00" modified: "2026-09-01T10:49:54+00:00" language: "en-US" site: "Starbread Bakery" description: "What size proofing basket for sourdough you need comes down to one number: the total weight of your dough. Not the flour weight, not the recipe title, but…" categories: "Bread Proofing Baskets" attribution: "Starbread Bakery (https://starbreadbakery.org/)" --- # What Size Proofing Basket Do You Need for Sourdough? What size proofing basket for sourdough you need comes down to one number: the total weight of your dough. Not the flour weight, not the recipe title, but the whole mixed batch. Most bakers skip that step. It's the reason so many first loaves come out flat, lopsided, or bulging over the rim. Our research on manufacturer sizing charts shows a consistent pattern. Most brands size a 1kg dough to a 9 to 10 inch round banneton. As of 2026, those capacity ratings assume medium hydration around 70%. Wet doughs need more room, but this is the baseline. ![what size proofing basket for sourdough](https://starbreadbakery.org/wp-content/uploads/2026/09/what-size-proofing-basket-for-sourdough-mti7aaob.webp) ## Why Getting the Banneton Size Wrong Wastes Your Bake A banneton, also called a proofing basket, does more than hold dough in a circle. It supports the sidewalls during proofing. It helps wick away moisture and keeps the dough compact while the yeast works. When the basket is too small, the dough climbs over the rim. You get a crease, a mushroom cap, and a base too thin to hold the loaf. When the basket is too big, the dough spreads out instead of up. It loses surface tension, flattens in the oven, and bakes into something closer to a frisbee than a boule. Neither result is ruined. Both are frustrating after a long fermentation. The fix is simple: match the basket to the dough. Are Bread Proofing Baskets Worth Buying? via America’s Test Kitchen ## Quick Answer Weigh the dough after mixing. Include flour, water, and starter. Match it to a basket rated for that same weight. A 1000g dough needs a 1000g banneton. When in doubt, size up one step. ## Round or Oval? Choose the Shape Before the Size Round baskets produce round loaves. Oval baskets produce long, slightly flattened loaves. That sounds obvious, but it's where a lot of basket mistakes start. A round dough doesn't sit well in an oval basket. An oval dough squashes sideways in a round one. ![round and oval banneton](https://starbreadbakery.org/wp-content/uploads/2026/09/round-and-oval-banneton-mti7abg5.webp) Use this if/then logic. If you bake a boule, buy a round banneton. If you bake a batard, buy an oval banneton. If you bake both, buy both. The shape also affects capacity. An oval basket holds more dough at the same stated width because its usable length is longer. ## Weigh Your Dough, Not Your Flour: The Most Common Sizing Mistake The biggest error is choosing a basket based on flour weight. A recipe with 500g of flour can easily yield 960g of dough after water, starter, and salt. A basket rated for 500g will overflow. A basket rated for 1000g will handle it comfortably. Here's what that looks like in practice: - 500g bread flour - 350g water - 100g sourdough starter - 10g salt - Total: 960g dough Your basket needs to fit 960g, not 500g. The Bread Bakers Guild of America uses total dough weight in its professional formulas for this exact reason. Hydration matters too. It's the water weight divided by the flour weight. A 70% hydration dough has 350g water for every 500g flour. ## Banneton Size Chart: Dough Weight, Diameter, and Capacity Once you know your total dough weight, the next step is matching it to a basket. Keep in mind that "capacity" on a banneton label usually refers to the weight of finished dough it can hold, not the flour weight. Diameter is measured across the top rim, not the base. ![banneton diameter measurement](https://starbreadbakery.org/wp-content/uploads/2026/09/banneton-diameter-measurement-mti7abqq.webp) Here's the general range from current manufacturer specs. | Total Dough Weight | Round Basket (diameter) | Oval Basket (length) | | --- | --- | --- | | 500g | 7 to 8 inches (18 to 20 cm) | 8 to 9 inches (20 to 23 cm) | | 750g | 8 to 9 inches (20 to 23 cm) | 9 to 10 inches (23 to 25 cm) | | 1000g | 9 to 10 inches (23 to 25 cm) | 10 to 11 inches (25 to 28 cm) | | 1500g | 11 to 12 inches (28 to 30 cm) | 12 inches (30 cm) | These numbers assume a medium hydration dough around 70% to 75%. Higher hydration doughs spread more and benefit from a slightly bigger basket. Lower hydration doughs hold their shape well, so you can stay at the smaller end of the range. ## High-Hydration Dough? How to Adjust Your Basket Size High-hydration doughs are the floppy, sticky ones. They spread more and sag faster in the basket. If you're baking a dough at 80% hydration or above, bump your banneton up one size from what the chart suggests. A 750g high-hydration dough will feel much more comfortable in a 1000g basket. Why? The dough has less structure to hold its own shape. Gravity pulls it outward. A tighter basket restricts that spread. If you stick with the exact capacity match, you'll notice the dough creeping over the rim during the final proof. For very wet doughs, consider a deeper basket too. Depth gives vertical support. It stops the dough from pancaking sideways. Use rice flour for dusting. It absorbs moisture better than all-purpose flour and won't turn gluey when the dough sweats. ## Signs Your Basket Is Too Small: Capping, Spillover, and Mushroom Loaves ![too-small proofing basket](https://starbreadbakery.org/wp-content/uploads/2026/09/too-small-proofing-basket-mti7acey.webp) You'll know right away when a basket is too small. The dough rises above the rim during proofing. If it climbs too high, the top edge forms a crease where it touches the basket. That results in a mushroom-shaped loaf, with a wide cap and a pinched base. Another sign is a dough that looks like it's trying to escape. It bulges over the sides. When you flip it out, the dough sticks or tears because it was wedged against the sides. Capping happens when the dough expands past the rim. The top sets into a wide, uneven shape. Here's what you'll see after baking: - Mushroom top with a narrow neck - Crease lines halfway down the crust - Uneven crumb with dense patches near the pinch - A loaf that's taller than it is wide, but unstable If you're seeing these signs every bake, increase your basket size one step. Even a half-inch larger rim makes a difference. Sourdough proofing basket explained #sourdough #sourdoughbread #sourdoughstarter via Home on Liberty Hill ## Signs Your Basket Is Too Big: Flat Dough and Lost Oven Spring A basket that's too large is trickier to spot. The dough looks fine when you flip it out. But it spreads immediately. It doesn't hold a tall round shape on the baking surface. The loaf bakes flat and wide with weak oven spring. The problem starts during cold proofing. The dough relaxes into the empty space. It loses tension because the basket walls aren't providing any squeeze. When you score it, the blade drags through a slack surface instead of cutting a clean, popped ear. Check for these signs after baking: - A wide, squat loaf - Little to no ear on the score - A flat bottom with excessive spread - A crumb that's dense in the middle If the loaf looks like a slightly raised pancake, your basket is likely too big. Drop down one size or reshape the dough more aggressively before proofing. Tight shaping helps a small basket work better. ## Lined vs Unlined Baskets: Does It Change Your Size Choice? The short answer is no. Lined baskets have a cloth liner inside. Unlined baskets show the rattan spiral pattern. Both hold the same dough weight for the same diameter. The liner doesn't change capacity. What it changes is the release. Lined baskets are easier for beginners to unmold. The fabric pulls away cleanly. Unlined baskets leave spiral ridges on the crust. Those ridges are attractive on rustic loaves, but they can trap sticky dough. For sizing, the liner takes up a tiny bit of interior space. It's not enough to change your basket decision. Use the same size chart either way. Some bakers prefer lined baskets for high-hydration doughs. The cloth prevents sticking to the rattan gaps. If you already own an unlined basket and struggle with stickiness, buy a separate liner instead of a whole new basket. ## Banneton Materials: Cane, Wood Pulp, or Plastic — What Actually Matters Cane and rattan are the classic materials. They're breathable, which helps form a dry, strong crust during proofing. Wood pulp baskets are a newer option. They're heavier and often have a smooth interior. Plastic or polypropylene bannetons are dishwasher-safe and easier to clean. Does material affect size choice? Not really. Capacity ratings are based on volume, not material. But moisture handling varies. Cane and wood pulp wick moisture away from the dough. Plastic doesn't absorb moisture, so the dough stays stickier. Here's a quick comparison for sourdough bakers: | Material | Breathability | Cleanup | Best For | | --- | --- | --- | --- | | Cane / rattan | High | Hand wash, air dry | Rustic crust, high-hydration dough | | Wood pulp | Medium | Hand wash, air dry | Smooth sides, even shape | | Plastic / PP | Low | Dishwasher-safe | Beginners, frequent bakers | Our research shows most professionals still reach for cane. It's the most forgiving with wet doughs. If you bake often, invest in a cane banneton, a cloth liner, and a stiff brush for cleaning. The material matters less than the size match. ## No Banneton? How to Size a Mixing Bowl as a Backup No banneton on hand? A mixing bowl works fine. You just need the right volume and a solid cloth liner. A 2-liter bowl fits roughly 500 to 750g of dough. A 3-liter bowl handles about 1000g. Measure the bowl across the top rim. It should match the banneton diameter you'd normally use. A 9-inch bowl works for a 1000g dough, the same as a 9-inch round banneton. Line it with a cotton or linen kitchen towel. Dust the towel generously with rice flour. Shape the dough as usual. Place it seam-side up in the lined bowl. The towel gives the dough a non-stick surface, but it doesn't wick moisture as well as cane. Expect a slightly softer crust after proofing. That's fine for a backup method. If you're still unsure about which size fits your bake, these questions come up often. ## FAQs: Banneton Sizes, Capacities, and Shaping Questions ### What's the difference between dough weight and flour weight? Flour weight is only one part of the dough. The total dough weight includes water, starter, and salt. A recipe with 500g of flour can yield 900 to 1000g of dough. Always base your basket size on the entire batch. Manufacturer capacity ratings refer to finished dough weight. ### Can I use a larger banneton for a smaller dough? Yes, but the loaf will spread more. A large basket gives the dough no side support. Shape the dough extra tight and shorten the proof slightly. For the best results, match the basket to the dough or go one step up. A 750g basket is a safe middle ground for small bakes. ### Should I buy a round or oval banneton first? That depends on the loaf you bake most. Round baskets suit boules. Oval baskets suit batards. If you bake both, buy the round one first. A boule is easier to shape for beginner bakers. Many home bakers find round loaves bake more evenly in a Dutch oven. ### How much rice flour should I use to dust a banneton? Use about 1 to 2 tablespoons per basket. A light, even coat is enough. Too little flour and the dough sticks. Too much flour leaves white streaks on the crust. Brush off any clumps before proofing. ### Does a bigger basket mean a bigger loaf? No. The basket size doesn't change the dough volume. It only changes how the dough holds its shape. A bigger basket produces a flatter loaf. A smaller basket produces a taller, more constrained one. Your recipe and shaping determine the final loaf size. ## The Final Decision Guide: Pick the Right Banneton Every Time Here's a quick step-by-step to use before your next bake. 1. Weigh the total dough after mixing. 2. Decide the loaf shape: round for boule, oval for batard. 3. Match the dough weight to the chart in this article. 4. For high-hydration doughs over 80%, choose one size up. 5. For cold proofing overnight, keep the same size. 6. When unsure, choose the larger basket, not the smaller. Follow that flow and you'll skip the mushrooms and pancakes. Your loaves will hold shape, rise properly, and bake into exactly what you intended. As of 2026, most bannetons sold are sized by dough weight, not by loaf size or flour weight. Use that number and you'll be fine.