While the salmon is cooking, make the chimichurri sauce. Mince the garlic with a knife or through a garlic press. In the bowl of a food processor, add the minced garlic, mint, parsley and cilantro and pulse until chopped and combined. Add in the olive oil, vinegar, lemon juice and a pinch of salt. Pulse a few times to combine. Taste and adjust the seasoning. Pour the sauce over the roasted salmon and serve. You'll have extra chimichurri sauce which can be stored in the refrigerator in an airtight container for up to 2 weeks.