Make Ahead: The sauerkraut can be prepared through Step 2 and refrigerated for up to 2 days.
In Germany's Pfalz region, cooks braise sauerkraut with onion, apples, seasonings, a touch of sugar, and a little of the region's Riesling wine, creating an addictive accompaniment for juicy weisswurst. The kraut's light sweetness pairs perfectly with a slightly off-dry German Riesling, particularly one from the 2003 vintage; try the appley 2003 Pfeffingen Pfeffo or the minerally 2003 S.A. Prüm Blue Slate.