Recently I tried the Haybox that I had bought during AID India conference from Srikakulam volunteers. And I must say it works magically well!
These Hayboxes were basically designed to help the villagers of Srikakulam cook rice efficiently and save on fuel as well as time. It also serves a means to support their livelihoods. ‘Hay’ being an insulator is able to preserve the heat for sufficiently long time, hence when rice is transferred to Haybox after having been brought to the boiling point, it cooks on its own. I also tried this at home with the Haybox that I bought (Demonstrated in the photograph). It took around 25 minutes to cook 1 cup of rice for me. There was no access water left and it was also possible to keep it hot till lunch time.
The detailed report from AID Srikakulam can be found here.
Haybox in Srikakulam, is primarily used to cook rice, but it can be used for most of the cooking for which we use pressure cooker such as making Khichadi, boiling vegetables etc.
Here’s a video that shows a Haybox demo given by Ravi Kuchimanchi to the villagers of Srikakulam.