Whether used as a marinade or as a sauce, a versatile chimichurri complements most any grilled fish, chicken, or meat.
Cooks' notes:
• If you aren't able to grill outdoors, beef can be cooked in a hot oiled large (2-burner) ridged grill pan over medium-high heat.
• Chimichurri sauce can be made 1 day ahead and chilled. Bring to room temperature before serving.