Housed in a heritage-listed 1920s bank basement, The Boom Boom Room has always been a destination in its own right. But as it was hidden underneath the enormously popular Donna Chang, it was often used as an extension of the restaurant.

That’s partly why the owners of both venues, the Ghanem Group, have decided to transform The Boom Boom Room into an izakaya.

“We have seen great success leveraging The Boom Boom Room as an extension of Donna Chang and really saw the potential to [open] a relaxed, dark and moody basement restaurant and bar,” the Ghanem Group’s Nehme Ghanem said in a statement.

The space will mostly remain as is, except for some minor furniture and design changes. Once opened, the space will be able to seat 140 with the current restrictions.

The menu, curated by Ghanem Group’s executive chef Jake Nicolson, will feature dishes such as miso glazed toothfish, a barramundi katsu bao burger and a form of ngiri called gunkan.

Cocktails by beverage director Aaron Clark will include the Reiki Master (Suntory Toki whiskey, umeshu, pickled ginger, honey, lemon juice and smoke) and Hana (cherry blossom, Haku vodka, lychee and green tea soda).

The Boom Boom Room Izakaya is set to open on October 2.