Southern Collard Greens

Ingredients (10)

• 1 Tablespoon olive oil
• 1 yellow onion
• 1 teaspoon minced garlic
• Pinch red pepper flakes
• 2 smoked turkey tails or ham hocks
• Water to cover
• 12 cups chopped and cleaned greens (see note)
• 2 teaspoons apple cider vinegar
• 2 teaspoons brown sugar, or to taste
• Salt and pepper, to taste