The currently unnamed project will seat 210-covers and serve classic French dishes inspired by Scottish ingredients.
Alain, who holds three Michelin stars at the Roux family’s Waterside Inn in Bray, will take the position of signature chef at the site.
It will replace the existing Hadrian’s Brasserie and The Balmoral Bar, which has been undergoing a multi-million pound renovation since January.
The Balmoral, a Rocco Forte hotel, is also home to the Michelin-starred Number One restaurant.
“We will be led by the fantastic array of Scottish ingredients and flavours to include beautiful seafood platters and tasty sharing plates at the bar,” says Alain.
“It will be an exciting menu, informed by my French heritage but totally inspired by Scotland.”
The Roux family already runs several restaurants in Scotland. Michel’s brother Albert operates Chez Roux sites across the country, as well as two restaurants at Inverlochy and Crossbasket castles in partnership with his son Michel Jr.
Michel Sr says the new opening marks a “unique alliance” between the Roux and Forte families.
“As leaders in our fields, our families are committed to excellence, impeccable service and promoting the next generation with my son, Alain leading the restaurant,” he says.
“It is a formidable synergy, an exciting new venture and we can’t wait to welcome our first customers.”
The name and design of the new restaurant will be revealed in the coming months.