Sauerkraut Pierogi Filling - barrel cured sauerkraut

Method

• Put sauerkraut in large pan.
• Add water just until covered and boil for 45 minutes (to soften kraut).
• Meanwhile, dice onions and fry in large skillet with 1 stick of butter until soft and golden, just browning around edges.
• After kraut boils drain in colander.
• Add another stick of butter to onion skillet and add kraut.
• Stir until just browning and butter has coated kraut.
• Refrigerate until completely cool.