To make this recipe gluten-free, substitute the all-purpose flour with a 1:1 gluten-free flour blend designed for frying. Ensure the cornstarch and all seasonings (especially garlic salt) are labeled gluten-free, as cross-contamination can occur during processing. The rest of the ingredients, including the crab, buttermilk, and hot sauce, are typically gluten-free—but always double-check labels to be safe.