Cornstarch Pudding

3/4 cup granulated sugar
2 tablespoons cornstarch
1/4 teaspoon salt
2 cups milk
2 tablespoons butter
1 teaspoon vanilla extract

For Chocolate Pudding:
2 (1 ounce) squares unsweetened chocolate

For Banana Pudding:
2 bananas, chopped

For Butterscotch Pudding:
Brown sugar instead of white
1 tablespoon extra butter

Blend sugar, flour and salt. Gradually add milk, mixing well. Cook and stir until smooth, thickened and clear. At this point, add any ingredients necessary for variations. Stir a little of the pudding very slowly into beaten egg, then return to pudding. (If you heat the egg too quickly, it will cook a little.) Add butter and vanilla extract; mix well, and chill in the refrigerator.