Bonnie, as long as your Dutch oven holds at least 4 qts, it should be large enough that your dough won't reach the lid (even a flat one) in any kind of detrimental way. If it's a cast iron pot, then it should be safe to pre-heat empty, but if it's enameled, be sure to check if Lodge recommends this technique before trying it out yourself. Mollie@KAF

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