Choucroute garni combines the smoky flavors of several sorts of sausage, pork butt, and thick-cut bacon with the pungent perfume of sauerkraut, bay leav es, juniper berries, and caraway seeds.
Make a spice bundle: Place spices, bay leaves, and garlic on a square of cheesecloth; tie into bundle with kitchen twine.
Heat oil in a very large Dutch oven over medium heat. Add onions and salt. Cook, stirring occasionally, until onions are translucent, about 5 minutes. Add bacon, pork butt, and spice bundle. Cover with sauerkraut. Add wine and enough water to come 1 inch below sauerkraut. Bring to a boil. Reduce heat to medium-low; cover, and simmer 45 minutes.
Add potatoes and carrots. Cover; cook until almost tender, about 20 minutes.
Using a skewer or the tip of a paring knife, poke a few holes into each sausage to prevent them from bursting. Place kielbasa in a dry skillet over medium heat. Cook, turning often, until browned, about 8 minutes. Put all sausages into the Dutch oven; cover, and cook until heated through, about 15 minutes. Using a slotted spoon, transfer sausages and vegetables to a plate. Drain sauerkraut, and arrange on a serving platter. Arrange sausages and vegetables on top. Garnish with parsley, and serve with mustards.