Calamondin, or Kalamansi as what we call it here in the Philippines is a lime like fruit which we use in many dishes. I often use this fruit to make my sour broth, or add the juice in soy sauce to make a nice dip (especially in fried fish). People here in the Philippines also use the juice of this fruit to marinade their meats for grilling or frying. Compared to other citrus fruits of its kind, I love this one because although it's predominantly sour, it's very fruity as well.
*** Jenn ***