Thank you, sunray and syzygy!
I was doing fine solving the puzzle thanks to the theme until I reached the lower-left part. I had the first three letters of 56A and 58A but differing notions on how to end each. When I received a nudge for 56A eventually Down entries 45, 46, 47 and 51 were filled correctly.
Two friends gave me Theme Words A, B, C in May this year. I'm thanking them by giving them a recipe from their local cuisine.