1 1/2 pounds ground bison

5 tablespoons mayonnaise, divided

2 teaspoons salt

1/4 cup instant coffee crystals

3 tablespoons brown mustard

5 - 7 slices Gruyere cheese

5 - 7 pretzel rolls

Form 5 - 7 bison patties (a little smaller than a regular hamburger).  Brush both sides with mayonnaise (about 2 tablespoons total).  Grill, seasoning the tops with half of the salt and half of the coffee.  After five minutes, flip and sear the second side.  Cook a few more minutes and flip one more time to sear on the coffee mixture.

Mis remaining mayonnaise with mustard.  Place about a tablespoons worth on top of each burger.  Add cheese and close the lid of the grill until cheese melts.  Makes 5 - 7 sliders.