1 cup of sugar
6 Tbsp butter
1/2 cup heavy whipping cream
2. Heat sugar on moderately high heat in a heavy-bottomed 2-quart or 3-quart saucepan. As the sugar begins to melt, stir vigorously with a whisk or wooden spoon. As soon as the sugar comes to a boil, stop stirring. You can swirl the pan a bit if you want, from this point on. Note that this recipe works best if you are using a thick-bottomed pan. If you find that you end up burning some of the sugar before the rest of it is melted, the next time you attempt it, add a half cup of water to the sugar at the beginning of the process, this will help the sugar to cook more evenly, though it will take longer as the water will need to evaporate before the sugar will caramelize.
3. As soon as all of the sugar crystals have melted (the liquid sugar should be dark amber in color), immediately add the butter to the pan. Whisk until the butter has melted.