1. Place the pork into a small mixing bowl with the salt, 5-spice, and red pepper flakes. Mix until well combined and form into eight patties, 2 ounces each.
2. Heat a large nonstick skillet over medium-high heat and place patties in a single layer. Let cook on the first side until you can see halfway cooked up the sides of the patties, then flip. Cook on the other side until cooked through, about 10 minutes total.