Step 1

Thoroughly blend together the black pudding, mash potato and egg yolk and divide the mixture into 4 and with floured hands shape into 5 cm / 2 inch depth and into 15cm / 6 inches in diameter.

Step 2

Dip into the beaten egg and then coat generously with breadcrumbs.

Step 3

Heat the oil in a frying pan and fry until the cakes are golden brown on both sides and keep warm in the oven.

Step 4

Meanwhile poach the duck eggs and keep warm.

Step 5

Put the tarragon, mustard seed and mustard into a bowl and blend thoroughly with the mayonnaise.

Step 6

Place a little rocket or watercress onto each plate, top with a black pudding potato cake, poached egg and sprinkle the mayonnaise over the top.

Step 7

Finish with freshly milled black pepper.