Preheat oven to 400 degrees F.
Combine all ingredients except pork in a food processor and pulse until minced. Transfer to a large bowl and add pork; use your hands to thoroughly combine.
Form meatballs, using 1 rounded tablespoon of pork mixture each, and place on parchment-lined baking sheets 1 inch apart. Bake 25 minutes, or until golden brown and cooked through.
Meanwhile, make sauce by combining all ingredients in a medium bowl. Transfer to serving dish.
Serve meatballs in lettuce cups with a slice of cucumber and a drizzle of sauce - I recommend putting out the components and letting guests assemble their own!