Latent heat of fusion is typically 100 times bigger than specific heat. I couldn't find a source for peanut oil, but [1] has values of around 200kJ/kg for vari

Latent heat of fusion is typically 100 times bigger than specific heat. I couldn't find a source for peanut oil, but [1] has values of around 200kJ/kg for various vegetable oils. Heating 1kg of water by 5 deg Celsius would take only 22kJ, so the oil should be a lot better. [1]: https://doi.org/10.1007/BF02549465 https://doi.org/10.1007/BF02549465