The following is a step by step guide to building a retained heat cooker that was designed for the purpose of the
Jefferson Community Center workshop 2013
1 Cardboard Produce Box
1 Roll of Aluminum Foil
Paper (newspaper is preferred)
1 Mylar emergency blanket
This is an easy process using less than 10 dollars worth of materials
Figure 1: Cardboard box is lined with paper
Line the main box with paper
Figure 2: be sure to allow the foil to drape over sides of box
Line the cardboard box with aluminum foil
Line the Box with a Mylar emergency blanket, be sure to reduce the number of air pockets.
Figure 4: the final cooker
Repeat steps 1 and 2 with the lid of the box
The cooker is now complete! For use just place some blankets and towels inside, and seal a cooking pot in the cooker.
The cooker is easy to use. Bring a meal to the proper temperature and leave it there for at least 2 minutes, then seal it in the box. Leave it in the box until cooking is completed. It should be noted that recipes using this method require less spicing and usually 50% more time to cook, so plan accordingly.
Clean your cooker between each use.
Be sure to wash all blankets and towels used in the cooking process
Do not leave your cooker in areas where it could get wet.
Always ensure that your food is fully cooked before consuming
Experiment with new recipes! Stews and soups work well with this method.
Project, Device Keywords
aluminum foil, cardboard box, retained heat cooker, aluminum, cardboard, mylar blanket, newspaper SDG
Sustainable Development Goal
SDG02 Zero hunger, SDG08 Decent work and economic growth Authors
John Looney License
Category:Engr305 Appropriate Technology, Cal Poly Humboldt, Jefferson Community Center Language
English (en) What links here
Jefferson Community Center workshop 2013, Jefferson Community Center, User:Jlooney921 Impact
Number of visits to this page and its redirects. 182
2013 by John Looney Modified
2022 by Irene Delgado Cite as
John Looney (2013–2022). "Easy Retained Heat cooker". Appropedia . Retrieved March 29, 2023.