2In a large bowl, combine ground pork or turkey, basil, garlic, green onions, fish sauce, sweet Thai chili sauce, coconut sugar, cassava flour, pepper, and salt.
3Form mixture into 1- to 2-inch meatballs.
4Heat tallow or coconut oil in a large skillet over medium heat.
5Brown meatballs on all sides in batches.
6Transfer browned meatballs to a baking sheet.
7Bake meatballs for 15 minutes. Remove from oven.
8Prepare Nuoc Cham sauce: In a jar, mix fish sauce, rice vinegar, coconut sugar, water, garlic, and lime juice.
9Cook vermicelli noodles according to package instructions. Drain and set aside.
10Assemble bowls: Place cooked vermicelli noodles in bowls. Top with meatballs, sliced carrot, cucumber, lettuce, cilantro, and mint leaves.
11Drizzle Nuoc Cham sauce generously over the bowls before serving.