Sauce for Pork Tenderloin with Coffee Rub?

[jocelyng]

I'm going to grill some pork tenderloin with a coffee rub (see below), and I'd like to serve a sauce or salsa to go with it. I'd love some ideas.

TIA.

Rub
2 tablespoons ground, good quality coffee
2 teaspoons brown sugar
1 teaspoon ancho chili powder
1 teaspoon allspice
1 teaspoon kosher salt
1/4 teaspoon ground cinnamon

[free sample addict aka Tracy L]

I used a port reduction w/ currants for a rack of lamb that I rub with a coffee rub. it was very nice and might be a good contrast to the chili and compliment the cinnamon. I think I found it on Epicurious.