Mix mustard, vinegar, sugar, salt, mayonnaise and the crème fraiche together in a large bowl.
Shred the cabbage as finely as you can.
Take the the carrot and apple and cut into fine match sticks.
Mix the cabbage, carrot and apple together and then add the mayonnaise mixture, mix well and check for salt.
Add freshly ground black pepper to taste
This is a pretty classic recipe and is delicious and easy to make. You should let it sit for about 2 hours - longer is better. It can even be made the day before. Back home a barbeque just wouldn't be a barbeque with coleslaw. Check out my recipe for Quick Pickles to go with your burgers.I suggest Hellmans mayonnaise because unlike Swedish brands is mayonnaise and not dressing, and has no sugar in it. I find Hellmans at my local ICA Supermarket.