Decide your texture goal: crisp coating/batter or binding/thickening or gluten-free baking structure.
Choose the matching substitute from the list and swap using the listed ratio (start with 1:1).
If the batter/dough seems thick, loosen gradually with 1–2 teaspoon water per batch; if too thin, add substitute 1 tablespoon at a time.
For crisping, let coatings rest 5 minutes before cooking so starch hydrates and sets.
Bake or cook, then adjust next time: rice-flour-like tenderness usually needs less mixing and slightly lower liquid.