In a saucepan, add the sugar, buttermilk, butter, and corn syrup to a boil.

Allow to boil for 6 minutes while stirring constantly.

Remove from heat and stir in the baking soda and vanilla. Be careful because the baking soda will cause the mixture to bubble up. Stir until combined.

Allow to cool to warm and serve over french toast, waffles, or pancakes.