Rinse celery and steam with peel in salted water with a dash of vinegar until soft. Rinse celery in cold water, peel, cut into thick slices and sprinkle with juice of one lemon. Stir through salt, egg, flour, milk and butter, making sure there are no lumps.
Dip the celery in the batter with a fork, place in the highly heated fat and fry until golden brown. Drain in a sieve and serve on the spot.