Swaps: No Thai basil? Use Italian basil with a little fresh mint. Swap soy sauce for fish sauce for a more traditional flavor. Add tofu, a fried egg, or leftover grilled chicken to make it a fuller meal. Storage: Keeps up to 3 days refrigerated; reheat in a hot skillet for the best texture, or microwave with a splash of water. Freezes in portions for up to 1 month.