In a heavy bottom saucepan, combine the 1 cup sugar, 1 cup heavy cream, 1/2 cup salted butter and 1 teaspoon vanilla extract or vanilla bean paste.
Heat to a low boil, stirring with a wooden spoon.
Reduce to simmer and continue to stir until it thickens (about 5-10 minutes). Right before removing from the heat, stir in the 1/4 teaspoon baking soda until dissolved.
Serve immediately or allow to cool and refrigerate.
Did you try it? Let us know how it went in the comments section or star ratings!
Video
Notes
It will stay refrigerated for about a week. It also freezes well.