To prepare a vassar fudge candies recipe, first you need to prepare the ingredients. First, you will need the following ingredients: 1 cup (240 ml) evaporated milk, 1 teaspoon vanilla extract, 1/2 teaspoon salt, and 1 tablespoon of vegetable shortening. Beat the mixture with an electric mixer on medium speed until it's light and fluffy, about 8 minutes. Then, add the melted chocolate chips and mix until they are evenly coated. Pour the batter into an 8 x 8-inch pan and bake in the oven for 30 to 35 minutes, or until the center is set. Allow the cake to cool before cutting it into squares.