We call sugar icing powdered or ground to powder size (with crystals less than 0.15 mm in diameter) with added 2 or 3% starch.
The starch is very important to avoid the apalmezamiento.
It is widely used in baking its name comes from the French glace, which is pronounced as we call it glas, it is also known as sugar snow glace sugar.
250 g of normal white sugar
1 small teaspoon of cornstarch
We have to have our glass very dry (essential)
We put the sugar in the glass of our thermomix and pulverize
40 seconds / progessive speed 5/10