Favorite Athlete Lab - Cell reuse identifier not found in scope

I'm working on the Favorite Athlete Lab - trying to complete it while accepting I don't understand everything it is teaching yet.

I've encountered many challenges with the Lab but the current on is:

I've set the cell reuse identifier of my cell to 'drinkCell' in the attributes inspector - but when I use it in the scenes ViewController, I get the error "can not find 'drinkCell' in scope".

I can see from the teacher resources how this has been solved there, but as far as I can tell, this solution has not be taught at any point so far, and isn't even mention in the subsequent section on cell dequeuing.

let cell = tableView.dequeueReusableCell(withIdentifier: drinkCell, for: indexPath)

Any help understanding this much appreciated.

Favorite Athlete Lab - Cell reuse identifier not found in scope
 
 
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