Korean Style Wagyu Beef Short Rib

Name: Korean Style Wagyu Beef Short Rib
Ingredients: 1 cup soy sauce; 1 cup sugar; 1/2 cup Skrewball Peanut Butter Whiskey; 1/2 tablespoon sesame oil; 1/2 tablespoon toasted sesame seeds; 10 cloves garlic,pureed in a food processor; 1 onion, pureed in a food processor, plus 1/2 onion, sliced; 1 Asian pear,pureed in a food processor; 1/2 knob fresh ginger, pureed in a food processor; 5 pounds Wagyu beef short ribs, cut against the bone 1/2-inch thick; 1 tablespoon butter; 1/2 onion, sliced; Chopped fresh cilantro, for garnish; Steamed rice, for serving