Prepare the Herbs:
Finely chop the parsley and oregano (if using fresh) and mince the garlic.
Mix the Ingredients:
In a small bowl, combine the chopped parsley, minced garlic, red wine vinegar, oregano, and red pepper flakes (if using).
Add the Olive Oil:
Slowly whisk in the olive oil until the sauce is well combined.
Season:
Taste the chimichurri sauce and season with salt and pepper to your preference.
Let it Rest:
Allow the chimichurri to sit for at least 10-15 minutes before serving to let the flavors meld together. You can also refrigerate it for up to 3 days for even more depth of flavor.
Serve:
Serve the chimichurri sauce as a topping for grilled meats, roasted vegetables, or even as a marinade.