In a bowl, combine the green and red cabbage.
In a small bowl, combine the apple cider, honey, Dijon, celery seed, salt & pepper.
On the stove top over medium low heat, cook the baconuntil crisp. Drain on paper towel. Pour the bacon fat into a ramekin. In a smaller sauté pan over low heat, add 2tablespoons of bacon fat. Add the shallots and cook for 2-3 minutes or until the shallots are translucent. Add the dressing and whisk until emulsified and warm. Add bacon and apple to cabbage and drizzle with warm dressing.
You can serve warm, room temperature or chilled. If making it ahead, add the bacon and apples just before serving.