Hard Candy

To Cook the Batch

1. Combine the sugar and water in a heavy saucepan. Bring to a boil while stirring.
2. Add the glucose syrup and cream of tartar, if using. Cook to 156°C/313°F without stirring.
3. Pour the mixture onto an oiled marble slab. Add the coloring and citric acid, if using.
4. Turn occasionally as the batch cools to a plastic consi