Look back on grabbing Simpson's drink (5)

I believe the answer is:

rioja

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'drink' is the definition.
(Rioja is an example)

'look back on grabbing simpson's' is the wordplay.
'look back on' becomes 'ria' (I can't justify this - if you can you should believe this answer much more).
'grabbing' is an insertion indicator.
'simpson' becomes 'OJ' (OJ Simpson).
'ria' going around 'oj' is 'RIOJA'.

Can you help me to learn more?

(Other definitions for rioja that I've seen before include "Spanish table wine" , "Spanish wine type" , "Dry red wine from Spain" , "wine region" , "Spanish wine variety" .)

I've seen this clue in The Guardian.

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