Everyones Favorite Pastrami Sandwich

6 oz sliced pastrami
2 TB whole-grain mustard
4 oz beer
3 sl onion rings intact
1 TB oil : Salt and pepper
2 sl rye bread or thick crusty : brown bread
Preheat a grill. Season onions with salt and pepper
and brush with oil. In a small saucepan combine beer
and mustard and bring to a boil. Add pastrami and
simmer for 3 minutes. Grill onions on both sides and
toast bread on a cooler part of the grill. When all
ingredients are heated, prepare sandwich.