Garlicky Greens with Andouille and Onion

Heat oil in Dutch oven over medium heat until just smoking. Cook sausage until well browned, about 5 minutes. Add onion and cook until softened, about 3 minutes. Stir in garlic and cook until fragrant, about 30 seconds.

Add greens and vinegar to pot and cook covered, stirring occasionally, until greens are wilted and have released their juices, about 3 minutes. Remove lid and increase heat to high. Cook until liquid evaporates, 2 to 3 minutes. Season with salt and pepper. Serve.