Grilled Picanha & Chimichurri sauce

Ingredients

• 1/2 cup chopped parsley
• 4 cloves garlic, minced
• 2 teaspoons chili pepper flakes (less for milder flavor)
• 2 teaspoons minced oregano leaves
• 1 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 3 tablespoon red wine vinegar
• 1/2 cup olive oil
• 1 tablespoon kosher salt
• 1 tablespoon minced fresh parsley
• Zest of one small lemon, approximately 2 teaspoon
• 1 teaspoon minced fresh oregano
• 1 teaspoon ground black pepper
• 2 cloves garlic, roughly chopped