Shoyu Pork Cooked in a Crock-pot

• 4 to 5 pounds Pork Butt
• 1 cup Shoyu
• 1/2 cup Brown Sugar
• 1/2 cup White Sugar
• 2 tablespoons White Vinegar
• 2 tablespoons Mirin
• 1 tablespoon Coleman Mustard

Mix all ingredients together and put into a crock-pot. Add pork butt. Cook on high for 8 hours.