Finely chop the fresh parsley and place it in a mixing bowl.
Mince the garlic cloves and add them to the parsley.
Pour in the olive oil to the mixture.
Add the red wine vinegar for acidity.
Stir in the dried oregano for added flavor.
Sprinkle in the red pepper flakes for a touch of heat.
Season with salt and pepper to taste.
Mix all ingredients thoroughly until well combined.
Allow the sauce to sit for at least 10 minutes to let the flavors meld.
Taste and adjust seasoning if necessary before serving.