Step 1

Grease a pudding basin

Step 2

Mix together the flour, suet and mustard.

Step 3

Season with salt and pepper.

Step 4

Add water a small amount at a time, mixing together until a dough is formed.

Step 5

Roll out the dough and use it to line the pudding basin, leaving enough to form a lid.

Step 6

Chop the leeks into small pieces.

Step 7

Melt the butter and toss the leeks in it.

Step 8

Add the leeks into the pudding basin and top with the rest of the dough.

Step 9

Cover the pudding basin with greaseproof paper and silver foil, tied with string.

Step 10

Place the basin into a bowl of water and bring to the boil.

Step 11

Cook for two hours, topping up the water from time to time.

Step 12

Turn out onto a plate.