Crossword Genius

Excited geologist removes oil covering rich and large nutritional source! (7-3)

Ross

I believe the answer is:

ostrich-egg

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

'large nutritional source' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'excited geologist removes oil covering rich' is the wordplay.
'excited' indicates an anagram.
'removes' is a deletion indicator.
'covering' indicates putting letters inside.
'geologist' with 'oil' removed is 'geogst'.
'geogst' with letters rearranged gives 'ostegg'.
'ostegg' placed around 'rich' is 'OSTRICH-EGG'.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for ostrich-egg that I've seen before include "Large thing laid" , "It's laid by largest bird" .)

I've seen this clue in The Irish Times.
Want a hint initially instead of a full solution? Install my app