1/2cbuttermilkor milk/lemon juice substitute- see note
1csugar
1tspbaking soda
1tspvanilla
Instructions
In a large saucepan, combine butter, buttermilk and sugar over medium heat. Heat and stir until boiling, about 5 minutes.
Remove from heat and stir in baking soda and vanilla. Mixture will foam!
Notes
For an easy buttermilk substitution, pour 1 tbsp lemon juice into a 1/2 c measuring cup. Fill the rest of the way with milk. Let sit for 5 minutes before use.