Easy Retained Heat cooker

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Easy Retained Heat cooker
Final productjtl.jpg
Description Step by step guide to building a retained heat cooker
Keywords retained heat cooker, aluminum foil, cardboard box
Uses cooking, energy
Authors Jlooney921
Status Prototype
Made? Yes
Replicated? Was this project made independently by someone other than the authors and without their guidance? No
Countries of design United States
Affiliations Engr305 Appropriate Technology
Humboldt State University
Materials Cardboard
Aluminum
Newspaper
Mylar blanket
Estimated cost USD $ 10.00
Sustainable Development Goals SDG02 Zero hunger
SDG08 Decent work and economic growth
Documentation data
Language English
Manifest data
Language English
Updated 2020-06-04
Author Kathy Nativi
Author affiliation Appropedia
Author email info@appropedia.org

Overview[edit | edit source]

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

Building Instructions[edit | edit source]

This is an easy process using less than 10 dollars worth of materials

Materials[edit | edit source]

  • 1 Cardboard Produce Box
  • 1 Roll of Aluminum Foil
  • Duct tape
  • Paper (newspaper is preferred)
  • 1 Mylar emergency blanket
  • Scissors


How to Build[edit | edit source]

Building your own retained heat cooker:

  1. Figure 1: Cardboard box is lined with paper
    Line the main box with paper
  2. Figure 2: be sure to allow the foil to drape over sides of box
    Line the cardboard box with aluminum foil
  3. Figure 3: Mylar Blanket
    Line the Box with a Mylar emergency blanket, be sure to reduce the number of air pockets.
  4. Figure 4: the final cooker
    Repeat steps 1 and 2 with the lid of the box
  5. Figure 5: You're Done!
    The cooker is now complete! For use just place some blankets and towels inside, and seal a cooking pot in the cooker.


Use[edit | edit source]

The cooker is easy to use. Simply 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.

Maintenance and tips[edit | edit source]

  1. Clean your cooker between each use.
  2. Be sure to wash all blankets and towels used in the cooking process
  3. Do not leave your cooker in areas where it could get wet.
  4. Always ensure that your food is fully cooked before consuming
  5. Experiment with new recipes! Stews and soups work well with this method.