Slice tofu into small strips and marinate in the rice vinegar, brown sugar and 1 tablespoon of curry paste. Next, fry the tofu until crispy. Then add the chopped onion, and minced garlic and ginger. After a few minutes of cooking, add in the red pepper and cook until slightly softened. Then add in the rest of the curry paste, to taste, mixed with the soy milk. Cook until thickened to desired consistency. Add in the lime zest and juice. Remove from heat and add nuts and/or cilantro (optional). Serve over rice.