Bullock's Tea Room Popovers

Beat eggs in a bowl, then beat in milk until blended.

Combine flour and salt; work butter into the flour; then gradually add flour mixture to milk and egg mixture and blend well.

Fill 8 well-greased custard cups, and place them on a baking sheet, with enough separation between cups to allow all sides of each popover to bake at the same rate; and bake at 400 degrees for about one hour or until golden.