Tangy Crock Pot Pork (allrecipe.com)

This was a great recipe BUT was even better the second day!!
1 large onion, sliced

2 1/2 pounds boneless pork loin roast

1 cup hot water

1/4 cup white sugar

3 Tbsp red wine vinegar

2 Tbsp soy sauce

1 Tbsp ketchup
1/2 tsp black pepper

1/2 tsp salt

1/4 tsp garlic powder

1 dash hot pepper sauce, or to taste

Directions
1. Arrange onion slices evenly over the bottom of the slow cooker, and then place the roast on top of the onion. In a bowl, mix together water, sugar, vinegar, soy sauce, ketchup, black pepper, salt, garlic powder, and hot sauce; pour over roast.

2. Cover, and cook on Low for 6 to 8 hours, or on High for 3 to 4 hours.