To make this Soda Bread with Raisins and Caraway Seeds gluten-free, substitute the all-purpose and cake flours with a high-quality 1:1 gluten-free baking flour that contains xanthan gum. Ensure the baking soda, cream of tartar, and raisins are certified gluten-free. Handle the dough gently, as gluten-free doughs are more delicate and should not be overworked.