Jars of puréed ham or pea (8)

I believe the answer is:

amphorae

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

'jars' is the definition.
(I've seen this before)

'pureed ham or pea' is the wordplay.
'ham or pea' anagrams to 'AMPHORAE'.
Though, I'm not sure how the anagram is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for amphorae that I've seen before include "ancient vessels" , "Tall classical jars (E, not S)" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app