Add garlic and red onion to a food processor and pulse just a few time until fine. Add in parsley, oregano, and cilantro and pulse a few more times until mixture is fully incorporated. You'll want to make sure that the herbs are not completely pureed, just finely chopped.
Transfer to a small bowl and add in olive oil and vinegar, and add salt and pepper to taste. Serve instantly or keep in refrigerator until ready to serve.
Recipe by The Sunny Side Up Recipes at https://www.thesunnysideuprecipes.com/chimichurri-verde-garlic-shrimp/