Storage: Leftovers can be stored in the refrigerator for up to 2 days. Reheat gently or serve cold.
Substitutions: If unpolished rice is unavailable, short-grain white rice can be used, though the texture may be smoother. You can substitute apple juice mixed with a splash of brandy for the red wine if a non-alcoholic version is preferred.
Tips: For a richer flavor, toast the walnuts in a dry skillet until fragrant before chopping. Ensure the rice pudding is not too hot when adding the kefir/yogurt to prevent curdling.