Outbound on Delta, return on United, comp upgraded both ways but similarity ended there. Had a delightful Korean bowl on Delta, and almost threw up on United's frittata after one bite. The fruit and the packaged yogurt on the tray was the only thing decent. The bread was rock hard.

I asked the FA if he could reheat the frittata, as it was lukewarm to cold, he said he needed to serve others. As bad as United's catering, I'd at least eat it; the frittata served on the particular United flight was downright horrid.