Salsa verde is great for any grilled meats, chicken, or fish. This sauce can be used as a marinade or just spooned on food hot off of the grill.
Combine the garlic, shallot, onion, and parsley in a food processor and pulse until combined, 6 to 8 pulses. Add the vinegar, lemon juice, 1 tsp. salt, ½ tsp. pepper, chile powder, and olive oil and pulse just until well combined, but still coarse, 8 to 10 pulses. Season to taste with additional salt and pepper.