The CO2 shortage in the UK has disrupted dry ice manufacturing. So no more ice cream on AA and UA flights departing UK.
F is getting chocolate mousse or brownies as an alternative.
But in coach...."In Premium Economy and Main Cabin we’ve replaced the mid-flight ice cream service with a Kit Kat bar". Serious devaluation!
https://thepointsguy.com/news/uk-co2-ice-cream-shortage/