Hi I have done everything and solved the 2 bonus puzzles.
I went back to Mr Donatello and he asked me for bread, meat and lettuce.
I have got in my inventory bread and meat, but no lettuce and have looked everywhere but dont know where to find it???
Hope someone can help me.
PLEASE
Spoiler
look in the basket at the market
It took a second look for me to find the lettuce as well.