Abstract: A process for ecologic cooking of food, comprising providing an external container, the external container having a cover, the cover having a regulator for regulating steam, gas generated in cooking of foods, or both; providing an internal container, the internal container containing foodstuff; wherein the internal container hangs inside the external container from one or two points; and a space is formed between the internal container and the external container preventing the foodstuffs from contacting with red-hot metal of the external container, and heating the internal container with water, steam, or water-steam wherein the maximum temperature reached by the foodstuff in the internal container is the temperature of the water, steam, or water-steam. Preferably a first ambient of heat tempered by humidity is formed in the internal container and the first ambient of heat is uniformly tempered with a second ambient of heat comprising heated water, steam, or heated water-steam.