1. Light a grill. In a large bowl, toss the blackberries with the piment�n . Spread the berries in a perforated grill pan or in a foil pan with holes poked in it. Grill over moderately high heat, tossing, until the berries just start to burst, 3 to 5 minutes.
2. In a saucepan, heat the 3 tablespoons of vegetable oil. Add the garlic and cook over moderately low heat, stirring, until just golden. Add the chopped onion and cook over moderate heat, stirring, until softened and just starting to brown, about 7 minutes. Stir in the tomato paste and cook until glossy, about 2 minutes. Add the blackberries, vinegar, brown sugar, soy sauce, chipotles, mustard and cumin and bring just to a boil. Simmer over moderately low heat, stirring, until slightly thickened and the berries are very tender, about 20 minutes.
3. Transfer the sauce to a blender and let cool slightly, then puree until smooth. Strain through a fine sieve into a bowl, discarding the solids. Season the sauce with salt and pepper and let cool completely. Spoon 1 cup of the sauce into a bowl and stir in the minced onion, the olive oil and the 2 tablespoons of oregano (use this for initial marinade). Reserve the remaining sauce for later use/mopping on any pork/chicken |