How To Make Caramel

In a medium saucepan over medium heat, add sugar and salt and cover with water. Bring to a simmer over medium heat, stirring every so often until sugar is dissolved, about 5 minutes. Increase heat to medium-high and cook until deeply golden, without stirring, 4 to 5 minutes more. (If you're using a candy thermometer, you want it to reach 350°). Once caramel is a deep copper color, turn off heat and immediately stir in cream and butter. Mixture will bubble up so be careful!  Let cool slightly in pan, then transfer to a container to cool completely. Store covered in the refrigerator for up to 1 month.