strain
釃 centers on the action of straining or filtering a liquid, typically to separate solids from it.
釃 combines 酉 (a wine vessel) with 麗, which likely contributes the sound and may relate to the idea of pouring or filtering wine.
The left side 酉 suggests a wine jar, and the right side 麗 looks like a decorative sieve. Picture straining wine through a beautiful filter to remove the dregs.
For シ, imagine you see a sieve straining wine: see -> シ, and the wine flows clear.