The Integrated Cooking Method (ICM) relies on these basic elements: Solar cookers (using the sun's free energy as a supplement to fuelwood) Heat-retention cooking (insulated baskets that allow food to continue to cook after once being heated to boiling) Improved combustion stoves (stoves designed to cook using much less biomass) Two other simple devices will further reduce fuel use and help preserve food: Water Pasteurization Indicator (WAPI) - Water only needs to be heated to 65°C (150°F) to ma