Smoked Turkey Braised Collard Greens Recipe

Name: Smoked Turkey Braised Collard Greens Recipe
Ingredients: 1 large bunch collard greens (1 1/2 to 2 pounds); 1 tablespoon olive oil; 5 medium cloves garlic, thinly sliced; 1 cup smoked turkey stock (see note); 2 teaspoons cider vinegar; 1/2 teaspoon kosher salt, plus more to taste; 1/2 teaspoon black pepper, plus more to taste; 1 pinch red pepper flakes; 3 ounces smoked turkey, preferably dark meat, shredded or chopped into bite-size pieces; 1 tablespoon butter; 2 teaspoons lemon juice