You can help “hamburger” meat stick together (particularly in less greasy meats such as venison) by adding in a little oatmeal to the meat. I also kneaded in some sliced and diced onions, along with some seasonings, and it added some great flavor when the burger was cooked. I used ~ 1/2 cup oatmeal to 1 lb. ground meat. We were really excited to be able to use some lettuce fresh from our garden to make it one delicious burger!