I mix 1LB of Jones reg sausage with about 3lbs of ground venison, then add one sp liquid smoke,one spoon of worcestershire sauce,one spoon of montreal or canadian steak seasoning,mix fast so all the fat dosen't seperate,
make the burgers, cook under the broiler for 8-9 minutes per side, the sausage just holds the lean meat together,adds some fat and has some seasoning
I cook ours on the charcoal grill outside with homemade charcoal, but I put some soaked hardwood on so the burgers are smoked more than grilled.