Fenland celery sausage rolls with a beer dip Serves: Makes 24 Ingredients 450g sausagemeat 1 small onion, peeled and finely diced 4 sticks Fenland celery, trimmed and finely diced 1 tbsp chopped fresh sage salt and pepper to taste 350g ready-made puff pastry 1 free-range egg, beaten with 1 tbsp milk (to seal) 1 free-range