Last of the multi-tea blenders (8)

I believe the answer is:

ultimate

I'm a little stuck... Click here to teach me more about this clue!

'last' is the definition.
(I know that last can be written as ultimate)

'the multi-tea blenders' is the wordplay.
'multi-tea' anagrams to 'ULTIMATE'.
But, I'm unsure how this is indicated.

'of' is the link.

Can you help me to learn more?

(Other definitions for ultimate that I've seen before include "Final; fundamental" , "Best - last" , "The last element of a series" , "Last, final or extreme" , "Last or highest" .)

I've seen this clue in The Globe and Mail.

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