Cut the pork tenderloin into 2-3 inch chunks/slices. This should yield about 7-8 pieces from the tenderloin. Place into a large resealable bag or deep dish. Add all of the marinade ingredients (vinegar, water, oil, salt, pepper, minced garlic, onion powder, and ground coriander). Marinate the pork for 10 minutes up to 24 hours in advance. It's a thick paste, so it will stick to the pork as it cooks later infusing it with flavor, so even a short marinating time will be great.
1 pound Pork tenderloin, 1 tablespoon White wine vinegar, 2 tablespoons Water, 1 tablespoon Olive Oil, 1 teaspoon Salt, ½ teaspoon Ground Black pepper, 2 Cloves Garlic, minced, 1 teaspoon Onion powder, 1 teaspoon Ground Coriander