Rinse the clods and pat them dry. Sprinkle with 2 tablespoons of lemon juice and leave to stand briefly
Heat clarified butter in 1-2 large pans. Salt the plaice. Turn in flour, knock off excess flour. First fry on the white side for 6-8 minutes until golden brown. Then turn and fry for 6-8 minutes on the dark side as well
In the meantime peel the onions and cut them into rings. Wash and finely chop parsley
Remove the plaice and keep warm. Steam onions in hot frying fat until transparent. Rinse crabs and pat dry. Add to the onions with parsley and heat briefly. Season to taste with salt, pepper and 1 tsp. lemon juice.
Arrange plaice with onions and crabs, garnish. Serve with new potatoes