Make the Peanut Sauce: In a small bowl, whisk together all peanut sauce ingredients until smooth and creamy. Set aside.
Make the Base Sauce: In a saucepan, whisk together water, soy sauce, rice vinegar, cornstarch, Sriracha (if using), ginger, and garlic. Bring to a simmer over medium heat, stirring constantly, until the sauce thickens and becomes translucent. Remove from heat and set aside.
Cook the "Meat": Heat a skillet with oil over medium heat. Crumble the tofu, peppers and onions and pan-fry until golden brown and crispy. Add to the base sauce and warm for 3-5 minutes together,.
Assemble the Wraps: Wash and dry the lettuce leaves. Divide the pan-fried tofu ("meat") and chopped vegetables between the leaves. Drizzle with desired amounts of peanut sauce and base sauce.
Enjoy! Wrap the lettuce leaves around the filling and devour!