Crab Bon Bons/Elderflower Mayonnaise

To make the crab bon bons

Pick over the crab meat to ensure there is no shell in it and place into a bowl together with the egg yolk and sieved mashed potato. Season well with salt and freshly ground pepper, and combine the mixture with your hands. Make a small ball of the mixture (about the size of a quail’s egg) and place onto a tray covered with greasepr