In a large plastic bowl add the ground beef, garlic, scallions, onion, cumin, paprika, salt and pepper. Mix well and refrigerate for about 1 hour, then form 4 patties.
Heat a grill or sauté pan and cook the hamburgers for 5 minutes on each side until done.
Remove to a plate and cover with aluminum foil. Allow the hamburgers to rest for 5 minutes.
To serve, place coleslaw, one tomato slice, one onion slice on a bun, and top with a patty, avocado slices, chorizo and plantain chips. Serve with ketchup on the side.