Mistakes when serving tofu with last of nuts (4,6)

I believe the answer is:

foot faults

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

'mistakes when' is the definition.
I know nothing about this answer so I can't judge whether this works.

'tofu with last of nuts' is the wordplay.
'with' is a charade indicator (letters next to each other).
'nuts' indicates anagramming the letters (nuts can mean crazy).
'tofu'+'last'+'of'='tofulastof'
'tofulastof' anagrammed gives 'FOOT FAULTS'.

'serving' is the link.

Can you help me to learn more?

I've seen this clue in The Times.

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.