Cheez Whiz

1 pound processed cheese, cut into small pieces
1 (13 ounce) can evaporated milk
4 tablespoons margarine
1 teaspoon salt
Dash of Tabasco sauce
1 teaspoon dry mustard

Melt all ingredients in heavy saucepan or double boiler over medium heat. Pour into containers; let cool. Use on crackers or in recipes calling for Cheez Whiz.