The only actually good (as opposed to “huh, that was better than my low expectations”) food I’ve ever had in an airport– an excellent all-tuna sushi plate (with a range of grades of fattiness) at Sushi Kyotatsu near gate 36 in Narita:
And, if you’re (un)fortunate to fly enough to have gold status on some airline in Star Alliance (United, etc), that also gives you complimentary access to the ANA lounge, which has light snacks and a serve-yourself range of sakes you can taste.
