The 81-year-old told Thai media outlet Komchadluek that the toil of sourcing and checking ingredients every day was becoming too much.
“I will not keep the restaurant going, but I am glad to teach whoever wants my recipe,” she said in the interview, a video of which was posted online on Oct 27.
She said she had not decided on when exactly to step down, but said it “could be next year”.
Though classed as street food, dishes from the open kitchen at Jay Fai’s eponymous restaurant in old Bangkok are not cheap – the signature crab omelette costs around US$40.