How do you prevent red cabbage from bleeding into other ingredients?

To prevent red cabbage from bleeding into other ingredients, you can blanch it briefly in boiling water, then shock it in ice water to set the color. Additionally, adding a splash of vinegar or lemon juice can help stabilize the color and minimize bleeding. When using red cabbage in salads or dishes, consider layering it between other ingredients to reduce direct contact. Lastly, serving it whole or in larger pieces can also help limit the release of its color.