Step 1Combine the cider and red wine vinegars, the water, oil, shallots, honey, salt and red pepper flakes in a small dish.
Step 2Place the cabbage, apples, celery and chives in a large bowl. Add the dressing. Toss until well coated. (This can be made a day ahead and refrigerated.)
Step 3Serve chilled. Just before serving, add the bacon; toss well. Taste; adjust the seasonings, honey and vinegar as necessary. Serve immediately (while the bacon is crisp).