Four fire engines and around 25 firefighters were called to a fire at a restaurant with flats above on Grand Parade in Tottenham.
Part of the ground floor kitchen and the extraction system were damaged by fire. There were no reports of any injuries.
A London Fire Brigade spokesperson said: “We’d like to remind restaurant and takeaway owners to ensure they don't have dirty ducting. If you don't clean the ducting in your extraction system regularly, you're at a greater risk of ducting fires”
The Brigade was called at 2037 and the fire was under control by 2159. Fire crews from Holloway, Hornsey and Tottenham fire stations attended the scene.
The fire is believed to have been accidental and involved a charcoal grill.