Uncovered popular variety of grub (5)

I believe the answer is:

larva

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

'grub' is the definition.
(I know that grub can be written as larva)

'uncovered popular variety' is the wordplay.
'LARVA' is hidden in amongst the letters.
But, I am unsure how the hidden word is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for larva that I've seen before include "Worm-like insect before metamorphosis" , "shows form of immaturity" , "immature six-footer?" , "Wriggler" , "early form" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.