Constructing tutorial - ale dish (11)

I believe the answer is:

ratatouille

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

'dish' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?

'constructing tutorial ale' is the wordplay.
'constructing' indicates an anagram.
'tutorial'+'ale'='tutorialale'
'tutorialale' with letters rearranged gives 'RATATOUILLE'.

Can you help me to learn more?

(Other definitions for ratatouille that I've seen before include "Film" , "cooked vegetables in a dish" , "Vegetable stew" , "Stewed vegetable dish" , "vegetable casserole" .)

I've seen this clue in The Daily Express.

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