3 cups isomalt
1 cup water
Put the isomalt and the water into a stainless pot. Bring to a boil. Cook until it reaches 350° F. While it is cooking fill a shallow pan with cold water. Fill another large spaghetti pot with ice. As soon as the mixture reaches 350°, put the whole pot into the cold water to stop the cooking process. Add food coloring at this time, if desired. Pour the cooked isomalt over the ice, slowly, in a circular pattern, with an approximately 4-inch radius.
BE CAREFUL AS THE MIXTURE IS EXTREMELY HOT!
Now, fill the large pot completely with cold water. Reach in carefully and pull out the coral.
Note: the coral can be made a day ahead and allowed to dry. Or, place in front of a cool fan, on low, on paper towels to dry quickly.