Put beef into a pan, add onions
then cook both together, uncovered for 1/2 hour.
Stir often to break up the meat
and prevent it from forming a lump.
Pour in water then season with
Bring to boil, lower heat and
Simmer 1 hour, stirring from time
Work in the chestnut purée.
Reheat, stirring, until piping
Spoon into 2.75 liter dish.
Mash potatoes finely over low
Beat in mustard, butter and milk.
Continue to beat until light and
Pile over meat mixture.
Reheat under hot grill until
golden, or for 20 minutes in hot oven to 425F, Gas 7.
The best Shepherd's Pie ever, the meat
enhanced by the addition of chestnut purée and its topping, a froth of
creamed potatoes flavored with mustard. It goes well with lightly cooked
shredded cabbage, Chinese leaves, sprouts and spring greens.