1. Combine ground beef, Smoked balsamic vinegar, Sweet Smoked Chili Rub, Applewood Smoked Sea Salt, and black pepper in a large bowl. Mix with hands and form into 3 inch wide patties that are about 1 inch thick. 2. Heat grill or cast iron skillet to medium-high. Cook patties for 3-4 minutes and flip cooking for another 3-4 minutes. Patties should register 160 degrees F when fully cooked through. 3. To melt cheese on patties, cover your grill or pan and turn the heat off, the residual heat should melt the cheese after 2-3 minutes. Serve sliders with mayonnaise, butter lettuce, and red onion.