2 pound flank steak, bottom round, or any lean beefsteak or roast

Spicy Marinade
1/2 cup teriyaki Sauce
1 teaspoon olive oil
1/4 teaspoon Tabasco sauce
2 tablespoons sherry
Dash of garlic powder
Salt, to taste
Freshly-ground pepper, to taste

Smoky Marinade
1 1/2 tablespoons liquid smoke sauce
1 cup water
2 teaspoons salt
1/4 teaspoon freshly-ground pepper
1/2 teaspoon garlic powder

Oriental Marinade
1 cup soy sauce
1 cup Chinese oyster sauce
1/2 cup brown sugar
1 cup granulated sugar

Trim all fat from meat and partially freeze to facilitate cutting. Cut into very thin slices, cutting with the grain. Combine marinade ingredients of your choice and stir in meat. Marinate overnight, stirring occasionally. Place cake racks on foil-covered cookie sheets or cover bottom of oven with foil and use oven racks. Drape meat slices on racks and roast for 8 to 10 hours or overnight at 175 degrees F.

Cool and store in an airtight container.