2 tablespoons butter
1 shallot, chopped
1 tablespoon all-purpose flour
1 shot dry sherry (2 TBS)
4 cups beef broth-I use Better than Boullion-cheap at Trader Joe's
1 1/2 pounds deli sliced roast beef
Grill seasoning blend for steak, such as Montreal Steak Seasoning Blend, or, coarse salt and pepper
4 hoagie rolls, split
In a large, shallow skillet over moderate heat, melt butter. Add shallots to butter and saute 2 minutes. Add flour to butter and shallot and cook a minute longer. Whisk in sherry and cook liquid out. Whisk in broth in a slow stream. Bring sauce to a bubble and allow to simmer over low heat until ready to serve sandwiches.
Pile meat loosely across your cutting board or a large work surface. Season meat with grill seasoning or salt and black pepper. Set out 4 ramekins or small soup cups for dipping sauce, 4 dinner plates and 4 split torpedo rolls. To assemble, using a pair of kitchen tongs, dip meat into loose au jus sauce and pile into rolls. Set ramekins or cups with extra dipping sauce along side the sandwiches.