Tangy cabbage slaw

Ingredients

250ml mayonnaisezest and juice 1 lemon2 tbsp cider vinegar2 tbsp wholegrain mustard1 tsp celery salt¼ head white cabbage very thinly sliced¼ head red cabbage very thinly sliced2 carrots julienned1 large red onion diced2 sticks celery thinly sliced

Method