Heat the oil in a frying pan and cook the onions until soft. Add the garlic and stir for 1 minute. Add the cumin and chipotle paste, fry for 1-2 minutes. Transfer it to a plate and let it cool .
In a large bowl mix the meat, eggs , parsley and the cooled onion mixture. Season with salt and pepper. Rest until you're ready to cook the burgers.
Turn on your BBQ or heat oil in a griddle pan.
Form 6 balls of the mince and flatten them slightly between your palms.
Cook the burgers for about 4 minutes on each side (depending on how well cooked you like it).
Serve in grilled buns or on corn tortilla with salsa and relishes to taste.