Definition of "bhaji"

Nor was I ever able to treat myself to the national drunkard's delight that is the ‘munchy box’: a foot-square pizza carton crammed with onion rings, doner meat shavings, hunks of nan bread and nuggets of assorted bhaji, all served on a bed of Glasgow salad.

2012, Tim Moore, You Are Awful (But I Like You): Travels Around Unloved Britain, Vintage, page 149