Together, the two designed a pot similar to the karahi, but of thin, stainless steel.

Unlike the cast iron or clay karahi of Pakistan, the balti bowl lets the food cook quickly, over high heat.

Longstanding Pakistani restaurants such as Lahore Karahi and Mirch Masala are as busy as ever.

Facebook Twitter Pinterest Local resident and London mayor Sadiq Khan enjoys a meal at the Lahore Karahi.