Buttermilk Syrup

 3/4 c buttermilk
1 c sugar
1/2 c butter (unsalted)
1/2 t baking soda
1 t vanilla

In a medium sauce pan, combine butter, sugar, and buttermilk and bring to a boil.
Once it's at a complete boil, let it boil for 1 minute.
Take off heat and whisk in baking soda and vanilla.
It will foam up during the boiling, and especially when other ingredients are added.