This astonishing pastime took place on the banks of the Ganges at Panihati, which is just north of Calcutta.
Lord Caitanya and his associates enjoyed many transcendental pastimes here. Chida-dadhi Mahotsav remembers how the Lord mercifully reciprocated with His devotees by arranging, through Nityananda Prabhu and Raghunatha dasa, to provide an ecstatic feast of yoghurt and chipped rice, along with various other nectar foodstuffs. Link below is an excerpt from Caitanya-caritamrta, Antya lila chapter 6, which describes this wonderful pastime in detail.
https://vedabase.io/en/library/cc/antya/6/