02Add chopped pepper and tomato to pan. Cover, and cook over low heat for 10 minutes. Uncover and cook, stirring occasionally, until most of the liquid has evaporated. Add sauerkraut and toss gently to combine. Cover and cook over low heat, stirring occasionally, for an additional hour.03Combine sour cream and heavy cream and mix well. Transfer half the mixture to a serving bowl, and refrigerate until needed. Add flour to the remainder, and stir until smooth. Add to pan. Cover and continue to cooking, stirring occasionally, for 15 to 20 minutes. Garnish with a dollop of the reserved sour cream mixture, and pass the remainder separately.