Dr. Chipotle Sauce for Pulled Pork

For our annual barn party, we always do pork and someone else always does chicken.  Often a whole pig is involved, but not this year.  This year I had a delicious pork dish with adobo when I was briefly in Phoenix over the summer and had surprisingly good food from a food truck parked out back of my hotel.

The Sauce:
1 small can of chipotles, with adobo sauce
24 oz. Dr. Pepper
several cloves of garlic
2 small onions diced
2 c. pureed tomatoes
6 oz. pineapple juice
1/4 c. brown sugar
1 T. salt

Put the Dr. Pepper, the garlic, and the chipotles in a blender, and puree.  Saute the onions in a couple tablespoons of olive oil until soft, then add the pureed ingredients plus the brown sugar, pineapple juice, salt, and tomato puree.  Simmer for about 20-30 minutes, until flavors are blended.  Makes enough sauce for about 4 pounds of pulled pork.