I suppose a person needs a meat grinder to feed a big family,otherwise just use a meat cleaver to chop the beef (or chicen)into fine chunks. Pre-fry some onions.
Mix with some oats,egg,chopped sweet pepper and spices.Fry in pan. Now you should have enough hamburger patties for a few servings. Now on the buttered bread with tomato and lettuce and put in sandwich press. Now I KNOW what is in my beef burger!