I haven't given an anime episode
10/10 since Fate/Zero stopped airing, but this one definitely deserves it. It was simply delightful from start to finish.
It had an excellent main plot with the Cooking Competition that was executed with wonderfully campy drama and style, while it had equally excellent "subplot" scenes going on elsewhere (Eru and Irisu's scene together, Oreki's latest wild customers
).
Irisu's return really was the cherry on top of a perfectly made cake. It's almost a shame that this Cultural Festival can't go on for the rest of the show, lol.