Chinese rock sugar is irregular lumps of crystallized, refined sugar.
It comes in opaque, gold-coloured, irregularly-shaped lumps of varying sizes that you have to whack before using.
The crystals can be up to 2 ½ cm (1 inch) wide.
Production
To make it, sugar cane is cooked until it just starts to colour.
Kwangtung Province in China is known for its production of rock sugar.
It is sold to consumers in bags or boxes.
The taste of rock sugar
It has a clear taste, with no caramel tones as you might think otherwise from the colour. It is not as sweet as regular white granulated sugar.
Because it’s less sweet, it doesn’t overwhelm the flavour of tea or sauces as much as white sugar can.
Cooking Tips
Chinese rock sugar is used marinades, sauces, soups, tea, and in poultry dishes in northern China. It can also be used to decorate cakes.
You can grind it down in a mortar and pestle to make a finer sugar.
It dissolves in water, though it will take a while.
Substitutes
For each sugar crystal called for, swap in 1 tablespoon white granulated sugar.