I knew about this trick MANY years ago - I was living in Spain and we did
the same with clementine rinds.

http://liketodiscover.com/wow-i-neve...le-must-watch/

Haven't listened to it, but you may have to heat the oil a little bit
first.

Other videos of the same:

https://www.youtube.com/results?sear...range+oil+lamp


Lenona.