Custard powder, a thickener, also known as Bird's powder, which is actually a brand and also the name of its inventor. It's the same company that developed the Baking powder.
This powder is made from corn flour.

How to use custard powder

This powder is used as a thickener for creams. It is used especially in a delicious Indian cream recipe with fruit pieces.

Why use custard powder

This powder helps to thicken the cream without the use of eggs, which, combined with soy milk, is particularly interesting for vegan people.