Based on a childhood staple, this syrup is like liquid caramel gold! While I love the original, this version kicks it up a few notches. This will keep in the fridge in an air-tight container for at least two weeks. Just warm it up slowly in the microwave, and it will be as good as new!
In a medium saucepan over medium-high heat, bring the butter, sugar, and buttermilk to a boil, stirring often. Remove the pan from the heat and stir in the vanilla, baking soda, and salt. Be careful - this is going to fizz a lot. Just keep stirring, and the foam will go down. Serve warm and enjoy!