Atlantic prawn salad with apple, walnut and shredded white cabbage recipe the juice of half a lemon 1 small red onion, thinly sliced ½ tsp salt 1 tsp red peppercorns, crushed 300g peeled, cooked prawns 2 tbsp walnut pieces 1 apple, cored and sliced very thinly Place all the ingredients in a large bowl and very carefully, without mashing up the apple, mix with large spoons until all is well coated. Serve as a cool supper dish, with perhaps a cucumber salad to go with it.