How do you stop red cabbage from bleeding when making coldslaw?

To prevent red cabbage from bleeding in coleslaw, you can soak the shredded cabbage in cold water with a bit of vinegar for about 30 minutes before mixing it into the salad. This helps to set the color and reduce bleeding. Additionally, using a creamy dressing instead of a vinegar-based one can help minimize color transfer. Finally, serve the coleslaw soon after preparation to keep the colors vibrant.