Cooked Mints

1 c. sugar
1/2 c. shortening
1/2 c. milk
1 box + 1 c. powdered sugar
1/4 tsp. salt
1/2 tsp. butter flavoring
oil of peppermint

Bring to a boil the sugar, shortening and milk. Put powdered sugar, salt and butter flavoring in mixing bowl. Pour boiled mixture over sugar mixture; mix until it starts to thicken. Add 3 to 8 drops oil of peppermint (according to taste); mix well. Put into pastry bag; squeeze onto wax paper. Put portion not being used over hot water, so it will not set up.