Crossword Genius

Notes the speed at which to put the gas in (6)

Ross

I believe the answer is:

aerate

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'which to put the gas in' is the definition.
I can't judge whether this definition defines the answer.

'notes the speed' is the wordplay.
'notes' becomes 'ae' ().
'the speed' becomes 'rate' (both can mean pace).
'ae'+'rate'='AERATE'

'at' is the link.

Can you help me to learn more?

(Other definitions for aerate that I've seen before include "get excited" , "Send out, broadcast" , "Supply with oxygen" , "Expose to fresh air" , "Make effervescent" .)

I've seen this clue in the Evening Standard.
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