Hot boiling oil in Indian festival (4)

I believe the answer is:

holi

I'm a little stuck... Click here to teach me more about this clue!

'indian festival' is the definition.
'holi' can be an answer for 'festival' (I've seen this before). I am not sure about the 'indian' bit.

'hot boiling oil in' is the wordplay.
'hot' becomes 'h' (abbreviation eg on taps).
'boiling' indicates anagramming the letters.
'in' indicates putting letters inside.
'oil' anagrammed gives 'oli'.
'h' placed inside 'oli' is 'HOLI'.

Can you help me to learn more?

(Another definition for holi that I've seen is " Annual Hindu spring festival".)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.