In a large bowl, combine the ground pork, minced garlic, minced ginger, sriracha, sesame oil, hoisin sauce, fish sauce, chopped cilantro, and salt.
Mix gently with your hands until all ingredients are just combined.
Divide the mixture into four equal portions and shape each into a patty.
Set aside while you prepare the grill or stovetop.
Preheat a grill or a frying pan to medium-high heat.
Cook the patties for about 5-6 minutes on each side or until the internal temperature reaches 160°F.
In a small bowl, mix the mayonnaise and chili crisp.
Spread this sauce on the bottom halves of the burger buns.
Place the cooked patties on the prepared buns.
Top with red onion slices and fresh cilantro sprigs.
Cap with the top halves of the buns to complete your burgers.