Now, herewith, Albert encloses the means (11)
I believe the answer is:
wherewithal
'the means' is the definition.
(wherewithal is a kind of means)
'now herewith albert encloses' is the wordplay.
'encloses' indicates the answer is hidden within the clue (I've seen 'enclosing' mean this (the answer is enclosed by the clue)).
'WHEREWITHAL' is hidden in the letters of 'now herewith albert'.
(Other definitions for wherewithal that I've seen before include "Resources" , "Money needed for some purpose" , "The money required for a particular purpose" , "Essentials" , "Means" .)