Delicious and Versatile Argentinian Chimicurri Sauce

Name: Delicious and Versatile Argentinian Chimicurri Sauce
Cuisine: American, Latin American
Ingredients: 3 to 6 cloves garlic (to taste); 2 tablespoons chopped red onion; 2 cups fresh flat-leaf parsley (firmly packed); Optional: 1/4 cup fresh oregano leaves (or 1 teaspoon dried oregano); Optional: 1/4 cup fresh cilantro; 1 tablespoon lime juice (or to taste); 2 tablespoons red wine vinegar (or to taste); 1/2 to 3/4 cup olive oil; Kosher salt (to taste); Red pepper flakes (to taste)