Gremolata is traditionally made with minced parsley, lemon, and garlic. Adding mint gives a fresh spring flavor that goes well with lamb.
Combine first 7 ingredients in a blender or food processor, and puree 30 seconds to 1 minute or until ingredients are granular, not smooth. (Pulse to avoid over-processing ingredients.) Scrape gremolata into a small bowl. Season with salt and pepper. Serve immediately, or keep refrigerated in an airtight container up to 1 week.