In over one million homes around the world, people bring their food to a boil in a pot for about twenty minutes, then place the pot into a Wonderbag to finish cooking. Once the pot is nestled inside the Wonderbag, it continues to cook for up to 12 hours. This cooking method also reduces water evaporation and retains traditional flavors and nutrient content. Wonderbag cooking saves between 30-80% of fuel -whether electricity, kerosene, charcoal, or firewood- and 60% of water typically used per meal.