I know this is a little more expensive but if you don't have any fat on hand orin a hurry go to the local supermarket and buy some 70% hamburger. This has enough fat in it to mix to make deer burger. It'susually $1.20-1.50 a pound (I purchasedtwo 5lbs packs for $12.00 dollars).

Now mix this with your deer burger (the % depends on ones taste) and double grind it. Now you will have some great tasting ground meat with just enough fat in it. This works very well if the venison is a little strong, the beef will tame it downsome so the rest of the family,even the kids, will like it.