Ingredients

1 cup sugar 

1/4 teaspoon salt 

1/4 cup water 

1/2 cup heavy cream 

2 tablespoons unsalted butter 

1/2 teaspoon pure vanilla extract 

Preparation

In a small saucepan, combine sugar, salt, and the water. Cook over medium heat until sugar is a medium amber color (use strips of paper to test: the paler color is undercooked; the amber hue is just right), about 7 minutes; wash sides of pan with a pastry brush dipped in water to prevent crystals from forming. Remove from heat.

Stir in heavy cream; add butter, and stir until combined. Let cool to room temperature; stir in vanilla.