Oven for cooking food comprising: a) a first cooking chamber delimited below by a first plate; b) a second cooking chamber delimited below by a second plate; c) a heat source, said second cooking chamber being placed on the top of said first chamber and said second plate delimiting said first cooking chamber above, in such a way that said second plate said first and second chambers (2, 3) communicating with each other, characterized int that said second cooking chamber comprises a perforated door, said perforated door comprising an air chamber, which consists of a double steel wall comprising a plurality of holes spaced apart from each other, said plurality of holes comprising: a) first holes, located on the face of the double steel wall which is exposed to the second cooking chamber; b) second holes located near the base of the double steel wall, said holes being inclined by 90° with respect to said first holes and facing the direction of the first cooking chamber and c) third holes located near the top of the double steel wall of said door, said holes being parallel and coaxial to said second holes. a) a first cooking chamber delimited below by a first plate; b) a second cooking chamber delimited below by a second plate; c) a heat source, said second cooking chamber being placed on the top of said first chamber and said second plate delimiting said first cooking chamber above, in such a way that said second plate said first and second chambers (2, 3) communicating with each other, characterized int that said second cooking chamber comprises a perforated door, said perforated door comprising an air chamber, which consists of a double steel wall comprising a plurality of holes spaced apart from each other, said plurality of holes comprising: a) first holes, located on the face of the double steel wall which is exposed to the second cooking chamber; b) second holes located near the base of the double steel wall, said holes being inclined by 90° with respect to said first holes and facing the direction of the first cooking chamber and c) third holes located near the top of the double steel wall of said door, said holes being parallel and coaxial to said second holes. said second cooking chamber being placed on the top of said first chamber and said second plate delimiting said first cooking chamber above, in such a way that said second plate said first and second chambers (2, 3) communicating with each other, characterized int that said second cooking chamber comprises a perforated door, said perforated door comprising an air chamber, which consists of a double steel wall comprising a plurality of holes spaced apart from each other, said plurality of holes comprising: a) first holes, located on the face of the double steel wall which is exposed to the second cooking chamber; b) second holes located near the base of the double steel wall, said holes being inclined by 90° with respect to said first holes and facing the direction of the first cooking chamber and c) third holes located near the top of the double steel wall of said door, said holes being parallel and coaxial to said second holes. a) first holes, located on the face of the double steel wall which is exposed to the second cooking chamber; b) second holes located near the base of the double steel wall, said holes being inclined by 90° with respect to said first holes and facing the direction of the first cooking chamber and c) third holes located near the top of the double steel wall of said door, said holes being parallel and coaxial to said second holes.