This spicy marinade owes its unusual flavor to the chipotle, a smoked jalapeno chile. Chipotles are usually sold canned in tomato paste. Look for them at Mexican and Latin American markets. Adobo marinade goes particularly well with pork.
Juice the oranges and lime. Finely chop chilies and garlic. Place citrus juices, chilies, garlic, oregano, cumin, black pepper, vinegar and salt in blender and puree until smooth.
Makes enough marinade for 1 1/2 to 2 pounds meat or chicken.