Crossword Genius

Something for cooking that's gastronomical or partly recycled (5,3)

Ross

I believe the answer is:

calor gas

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

'something for cooking that's gastronomical' is the definition.
I can't judge whether this definition defines the answer.

'or partly recycled' is the wordplay.
I cannot really understand how this works, but
'or' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for calor gas that I've seen is " Fuel sold in cylinders".)

I've seen this clue in The Telegraph.
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