Otoshi-busha (Japan): wooden drop lid, used in simmering; smaller in diameter than the pot, it sits on the food, submerging it and ensuring an even cooking  
- ↑ Thefreedictionary.com, The Power Of The Otoshibuta (The Drop Lid), . Accessed 29 October 2015.
- ↑ Wikipedia, Otoshi Buta, . Accessed 29 October 2015.