Prep the greens: Wash thoroughly in cold water, remove tough stems, and coarsely chop the 3 pounds of collards (about 10 cups). This may seem like a lot, but they will break down once cooked.
Build the broth: In a Dutch oven, combine 32 ounces chicken broth, 4 cups water, 1 cup onion, 3 cloves garlic, ¼ teaspoon salt, ¼ teaspoon pepper, and 1 ¼ pounds smoked ham hocks. Bring to a boil.
Add greens: Stir in collards, cover, and simmer 1 hour until tender. During this time carefully remove the lid and stir occasionally.
Finish the ham hocks: Remove, shred the meat, discard bones/fat, then return meat to the pot.
Season: Add 2 tablespoons vinegar and 1 teaspoon hot sauce, stir, and simmer another 20–30 minutes. Serve warm and enjoy!