Step 1

In a medium bowl, combine the ground pork with the bell pepper, garlic, ginger, chile sauce, fish sauce, sesame oil and 1 tablespoon of the grapeseed oil.

Step 2

In a large skillet or wok, heat the remaining 1 teaspoon of grapeseed oil until shimmering. Add the pork mixture and stir-fry over high heat, breaking it up, until it is cooked through and starting to brown, about 8 minutes. Stir in the water chestnuts, scallions, oyster sauce and cilantro and remove from the heat.

Step 3

Spoon the pork into bowls. Stack the lettuce leaves on plates. To eat, spoon the pork onto the lettuce leaves, roll up and eat.