Put the onion and garlic in a small food processor. Whiz until finely chopped, then add the herbs and liver. Pulse until get a thick paste.
Put the minced beef in mixing bowl. Add the liver paste, salt and pepper and combine well.
Rest for about 30 minutes, if time allows.
Divide the mixture into 6 equal portions and form patties. (Add some chickpea flour, egg or ground flaxseeds if the mixture hasn't combined properly).
Pan-fry or grill for about 5 minutes on each side.
Serve with condiments, side dishes, buns etc to your liking.