1) Separating via strainer 
(from the article `separation and purification`) In filtration, a porous material is used to separate particles of different sizes. If the pore sizes are highly uniform, separation can be fairly ...
Pressing items through a screen or strainer to break up the mass. It produces a lump free mixture that won't clog a pastry tip during filling.
Pushing food through a perforated sieve to get a soft, even texture.