Truffle

How to cook. Even if it is only a pair of eggs or a simple sandwich.

This superpower still eludes me most of the time but I keep practising.

Knowing when to leave a conversation, a room, a party, a relationship, etc.

Spot on about the gentrification bit. Entire town populations have shifted from local people to the self called expats and snowbirds. Just look at Chelém, Mérida, San Miguel de Allende, Tulúm, Cancún and many many more including most upitty neighborhoods in México City (Condesa, Roma, San Angel).