Mr. Karoubas,
Thank you for your descriptions and videos . I could replicate a solar oven made out of cardboard box, old clothes and aluminium foil. I used a stainless steel pot with a glass lid as my container. I could succesfully cook potatoes. I also tried bread, but on this day i was late to start, so only the outer crust cooked. If i had started early in the morning, i am sure the bread would cook well, too. I am in Izmir, Turkey, so the climatic conditions were very similar to yours. Next time, i will increase the surface area of the reflectors. On my first trial i only used the lids of the box.