Ingredients

1 1/2 cups sugar 

1 cup heavy cream 

1 teaspoon pure vanilla extract 

1/2 teaspoon salt 

3 tablespoons unsalted butter 

Preparation

Stir together sugar and 1/2 cup water in a medium saucepan over medium-high heat. Bring to a boil, stirring constantly. When sugar has dissolved, raise heat to high. Cook, without stirring, until mixture is medium amber, 7 to 8 minutes.

Remove from heat. Carefully stir in cream (it will steam), then the vanilla and salt. Let cool 5 minutes. Whisk in butter.