01 - Thoroughly rinse collard greens in several changes of cold water. Remove any tough stems and chop the leaves into approximately bite-sized pieces. Set aside.
02 - In a large pot or Dutch oven, combine the smoked turkey pieces and chicken broth. Bring the mixture to a boil over medium-high heat.
03 - Reduce the heat to low, cover the pot, and simmer for 30 minutes to infuse the broth with smoky flavor and begin tenderizing the turkey.
04 - Incorporate the chopped onion and minced garlic into the pot. Continue to simmer for an additional 10 minutes.
05 - Add the prepared collard greens to the pot in manageable batches, stirring until each batch wilts sufficiently to accommodate the remaining greens.
06 - Stir in the apple cider vinegar, hot sauce (if using), salt, black pepper, crushed red pepper flakes, and granulated sugar. Mix well to combine.
07 - Cover the pot and continue to simmer on low heat for 45 to 60 minutes, or until the collard greens achieve a very tender consistency.
08 - Carefully remove the smoked turkey pieces from the pot. Shred the meat off the bones, discarding the bones and skin. Return the shredded turkey meat to the pot with the greens.
09 - Taste the collard greens and adjust seasonings as desired. Serve hot, ensuring each serving includes some of the flavorful 'pot liquor' (broth).