Grilled Tuna With Spiced Butter

4 each tuna steaks or fillets, about 8 oz. each
1 cup unsalted butter
2 tablespoon minced cilantro
1 teaspoon jalapeno or serrano chili peppers -- finely minced
2 teaspoons garlic -- finely minced
1 teaspoon ginger, fresh -- finely minced or
1 teaspoon ginger powder

Place softened butter in mixing bowl and beat till fluffy. Blend in the cilantro, chili, garlic, and ginger. Spoon dollops of butter mixture onto waxed paper and refrigerate ahead of time for readied individual servings. Refrigerate. Place fish on rack 3 inches from mesquite coals. Grill fish about 4 to 5 minutes on each side. Place dollops of spiced butter on the finished fillet, or warm the spiced butter and spoon over the cooked steaks.