The traditional Kerala cooking, using natural fire wood...What is cooking?

As a repeat visitor, this time I got entry into the Mullapandal kitchen. I got in there by around 12.30 and they were all busy with the preparation of lunch items. Here are some of the photos I clicked there. This looks like the traditional kerala kitchen before the gas stoves became very common. Before the arrival of gas stoves, we used to have stoves ( aduppu in the local language Malayalam), which were lit by the natural wood (viraku). The experienced say that when the food is cooked using the natural wood, in earthen pots, it gives it a special taste, especially for the fish curry. Is that the trade secret of serving very tasty food, at affordable prices, consistently at Mullapandal?....