According to many sources, nihari originated in the royal kitchens of Lucknow, Awadh (modern-day Uttar Pradesh, India), in the late 18th century, during the last throes of the Mughal Empire.[3] It was originally meant to be consumed as a heavy, high-energy breakfast dish on an empty stomach by working-class citizens, particularly in colder climates and seasons. However, the dish later gained a significant amount of popularity and eventually became a staple of the royal cuisine of Mughal-era nawabs.[5][6]
In some restaurants, a few kilograms from each day's leftover nihari is added to the next day's pot; this reused portion of the dish is known as taar and is believed to provide a unique flavour. Some nihari outlets in Old Delhi claim to have kept an unbroken cycle of taar going for more than a century.[8]