Make the sauce. Simmer the soy sauce, water, garlic, and sugar. Stir in the cornstarch slurry and cook until slightly thickened. Set aside.
Make the wrappers. Blend or whisk the wrapper ingredients until smooth. Cook in a lightly greased pan over medium heat, using about ¼ cup batter for each wrapper. Cook for about 1 minute, then flip briefly or cover until set. Set aside.
Make the filling. Sauté garlic and onion, then cook the meat. Add tofu, green papaya, carrots, jicama, and cabbage. Season and cook until tender-crisp. Stir in cilantro and scallions. Let cool and drain excess liquid.
Assemble. Place a lettuce leaf on a wrapper. Add the filling, then top with fried garlic and crushed peanuts. Fold the bottom over the filling, then fold in the sides.
Serve. Pour the sauce over the lumpiang sariwa, top with more peanuts, and serve right away.
Video
Notes
Vegetables: I used green papaya, cabbage, carrots, and jicama. Bean sprouts, green beans, sweet potatoes, or ubod also work.
Protein: I used chicken and tofu, but ground pork, shrimp, or no protein also works.
Milk: Use regular milk, dairy-free milk, or water.
Melted butter: Neutral oil or ghee works too.
For serving: Lettuce, peanuts, and fried garlic are optional.