Thai Crab Salad Lettuce Wraps

Ingredients

• 1/4 cup unseasoned rice vinegar
• 3 tbsp sugar
• 2 tbsp water
• 4 tsp Asian fish sauce
• 1/2 tsp Kosher salt
• 1/2 cup chopped green bell pepper
• 1/2 cup chopped red bell pepper
• 1 1/2 tsp minced fresh serrano chile (remove seeds if you prefer less spicy)
• 2 tbsp chopped fresh cilantro
• 1 pound jumbo lump crabmeat, picked over
• 12 butter lettuce leaves, separated and cleaned