Jhinjhoti is a Hindustani classical music raga.
A famous rendition of this raga is Abdul Karim Khan's Thumri "Piya Bin Nahi Aavat Chain" which Bhimsen Joshi had heard as a child and which left a lasting impression on him. The famous ghazal "Gulon main rang bhare" by Mehdi Hasan Khan is also composed in Raga Jhinjhoti.
This Raga has a close resemblance to Raga Bagheshri; however, both hail from different thaats and listeners are often mistaken.
References
Jhinjhoti Wikipedia(Text) CC BY-SA