Grind corned beef very fine.
Brown onions gently in butter.
Mix corned beef well with potatoes, slightly browned onions, pepper and hashish.
Should mixture be too dry, add a little cold water.
Shape into 6 patties.
Brown in butter on both sides.
Serve with a poached egg on top.
Garnish with more grated hash if desired.
Canned corned beef can be substituted for fresh corned beef.