In a saucepan combine the water and rice. Bring to a boil, cover, and reduce heat to a simmer. Simmer for 20 minutes, until water is absorbed. Set aside and keep warm.

Heat oil in a wok over medium-high heat. Cook the pork, green onions, and garlic for 5 to 7 minutes, or until lightly brown. Add the tofu, carrot, Hoisin, and soy sauce, stirring frequently until heated through. Remove from heat, and stir in the sesame oil and chile paste.

To serve: spoon a small amount of rice into each lettuce leaf, top with the stir-fry mixture, and drizzle with additional soy sauce or hoisin, if desired. Wrap the lettuce leaf to enclose the filling.