My all-time favorite hamburger patty for making American style burgers. I found the original recipe in the Better Homes and Gardens Barbecue Book back in the 70's and this is the only recipe I ever use. It has been modified somewhat, but it retains most of the original ingredients. I always have a bottle of chili sauce in the refrigerator at all times for making these. Although you can perhaps substitute ketchup for chili sauce the taste will not be the same. You need to mix this meat mixture thoroughly. I use circular motion to get fat from ground beef and egg emulsified. The original recipe is for 4 hamburger patties but I usually make 5 patties because I like my patties smaller than quarter pounder.