Especially if you go fast enough (with a spoon for example), the best way to make small piles of powder badly distributed on the targeted surface.
The use of a sieve or a sprinkler, which I have already mentioned, is almost indispensable in practice, as it contains the powder to be spread evenly and allows it to be spread "in the rain", thus sprinkling.
But, in a very natural reflex you will probably do this:

The practical trick is to block the colander with your hand when it reaches the limit of the right surface.

So you take a little momentum to the right (green arrow), and you go to the left where your hand blocks the colander (red arrow) with a tiny shock against your hand, a shock that still helps the sprinkling.
Of course, if you are left-handed, you will reverse the direction.
It is a very simple and effective gesture, try it the next time you have to sprinkle.









