Add the sugar and water to a saucepan. Put over medium heat and stir often with a wooden spoon until sugar is melted. Use a wet pastry brush and brush down the sides of the pan. Continue to cook the sugar until it is an amber brown color. Be careful not to burn it at this point.
Add the butter. Be careful the mixture can sputter.
Remove from the heat and stir in the heavy cream. When it all comes together remove from the heat.
Add about 1/4 teaspoon of sea salt. Pour into a bowl or canning jar.
Recipe by Recipes Food and Cooking at https://recipesfoodandcooking.com/2015/09/20/caramel-apple-dip/