Wahaca has posted figures for the year to 29 June that show profit has more than quadrupled to £1.7m.
The popular Mexican restaurant group reported that turnover increased from £22.4m to £28.2m.
The group, which was co-founded by Mark Selby and the former MasterChef champion Thomasina Miers, opened three new restaurants during the period, and currently operates 15 outlets across the UK.
The company also operates fusion brand DF/Mexico which marries Mexican and American diner-style favourites, plus there are two Mexican Street Kitchen mobile restaurants.