Hi Shan, you're welcome to use a double boiler to melt the butter and sugar if you like. Just be sure to follow the same basic steps illustrated here and look for the visual cues that are given. After the sugar is added, heat until the mixture barely comes to a bubble. You don’t want it to boil, but it should start to foam slightly. The sugar should look mostly dissolved, which will help you achieve the shiny top. It's almost important to add the two cups of chocolate chips if you're looking for the shiny top. It seems to make a big difference in the final result. Kye@KAF

• Reply