Choucroute Garnie

Ingredients

• 3 tbsp. rendered duck or goose fat or unsalted butter
• 3 tbsp. unsalted butter
• 1 large yellow onion, thinly sliced
• 2 lb. sauerkraut, rinsed, drained, and squeezed dry
• 2 tsp. dried juniper berries
• 2 bay leaves, preferably fresh
• Kosher salt, to taste
• 1 raw pigs knuckles
• 1 (1 lb.) piece uncured slab bacon (a piece about 4” wide)
• 1 (1 lb.) piece double-smoked slab bacon (a piece about 4” wide)
• 1 rack (about 1 lb.) baby back pork ribs, halved
• 4 cloves garlic, thinly sliced
• 1 (750-ml.) bottle dry Riesling
• 6 medium Yukon Gold potatoes, peeled and quartered
• 3 Alsatian knacks or German frankfurters
• Horseradish sauce, for serving
• Whole-grain mustard, for serving