Crossword Genius

Italian food: tackle a lot, then second helping of pizza! (8)

Ross

I believe the answer is:

rigatoni

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

'italian food' is the definition.
(type of pasta)

'tackle a lot then second helping of pizza' is the wordplay.
I cannot quite see how this works, but
'tackle' could be 'rig' (I've seen this in other clues) and 'rig' is located in the answer.
'a' is found in the answer.
'of' could be 'o' and 'o' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for rigatoni that I've seen before include "Form of pasta" , "Short fluted tubes of pasta" , "Foodstuff" , "Short, ribbed, tubular pasta" , "Type of pasta" .)

I've seen this clue in The Telegraph.
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