INGREDIENTS
2 oz
Deli-shaved pastrami or deli-sliced corned beef or leftover corned beef
1
Onion, small
1 tbsp
Mustard, whole-grain
2 tsp
Worcestershire sauce
1
Kosher salt and freshly ground pepper
1/2 tbsp
Sugar
4
slices Pumpernickel or dark rye bread
1 1/2 tbsp
Butter, unsalted
1 1/2 cups
Jarlsberg cheese, grated
3/4 cup
Beer, dark