Homestead Vanilla Pudding

2 1/2 cups milk (whole is best but low-fat works fine)
1/2 cup sugar
2 egg yolks
1/3 cup granulated sugar
3 tablespoons cornstarch
1 whole vanilla pod cut into two or three pieces

Pour 2 cups of the milk (reserve 1/2 cup for later) and pieces of vanilla pod into medium saucepan.  On medium low, heat milk to warm.  Do not boil.   
Add in sugar and mix.

In another bowl, to the reserved 1/2 cup of milk add cornstarch and egg yolks.  Whisk until smooth.
Pour egg/cornstarch mixture into warm milk and vanilla.  Turn up heat slightly and stir constantly until pudding is thickened.

Serve warm or chilled.