Place all ingredients in a bowl or jar with a lid. Use a whisk to mix until well combined, or shake until well mixed.
⅓ cup red wine vinegar, ⅓ cup extra virgin olive oil, 2 garlic cloves, 1 tablespoon lemon zest, 1 tablespoon freshly squeezed lemon juice, 1 ½ teaspoons dried oregano, 1 teaspoon salt, ¼ teaspoon ground black pepper