Buttermilk  Caramel Syrup
1 1/2 cups buttermilk
1 cup sugar
1 cup brown sugar
1/2 cup butter
1 cup sugar
1 cup brown sugar
1/2 cup butter
 1 tsp baking soda
1 tsp vanilla
1 tsp vanilla
In a large saucepan, bring buttermilk, sugars, and butter to a boil  over medium heat.  Remove from heat and whisk in soda and vanilla.  It  will bubble up a lot.  As it cools, the bubbles will go away.