Silver beast resdistributes sachets containing leaves (7)
I believe the answer is:
teabags
'resdistributes sachets containing leaves' is the definition.
I know nothing about this answer so I can't judge whether this works.
'silver beast' is the wordplay.
I cannot really see how this works, but
'silver' could be 'ag' (Ag is the chemical symbol for silver) and 'ag' is located in the answer.
an anagram of 'beast' is 'teabs' which is within the left over letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for teabags that I've seen before include "Porous containers" , "They hold leaves for infusions" , "Sachets for the pot" .)