Bryan and Susan Webb have sold their Tyddyn Llan restaurant with rooms in Llandrillo, Wales, after 22 years.
The couple put the property on the market last year with a price tag of £1.8m.
Bryan said at the time he was looking to hang up his chef whites but admitted he would miss "the reward of people saying how much they enjoy my cooking".
The 13-bedroom property was built in 1742 and more recently was the private shooting lodge of the Duke of Westminster.
Under the Webbs, with Bryan in the kitchen and Susan overseeing front of house, Tyddyn Llan won and held a Michelin star between 2010 and 2020. It is still recommended in the guide for its "satisfying and wholesome" cooking.
In an update on X on 7 February, Bryan said the sale had gone through and the couple would remain at the restaurant for a further six months.
He wrote: "After six months of heartache, last week we finally completed on the sale of Tyddyn Llan.
"Although this does not mean Susan and I are leaving, we are staying on for up to six months and will continue to run Tyddyn Llan to the same high standards that we have for the past 22 years
"Susan and I will still be running Tyddyn Llan for the next six months offering good food, excellent wine list, friendly service and comfortable rooms.
"It would be wonderful to see you before I hang up my apron in July after 48 years cooking at the stove and we move onwards."
Bryan took his first head chef post at Café Rouge (unrelated to the chain of the same name) near the Barbican in London before moving to Hilaire in Old Brompton Road in 1987, which established his name on the London food scene.
He took over the kitchen from one of his food heroes, Simon Hopkinson, in 1990 and met Susan, who previously worked at Antony Worrall Thompson's Ménage Á Trois, when she came to help out in 1992. The pair have worked together ever since.
The couple married in 1995 and sold Hilaire in 2001 due to rent rises.
After taking a year out to travel, they returned to Wales and stayed the night at Tyddyn Llan. When the owners announced they were selling, they suggested the Webbs take over.