Wind Source Convection Cooking : A source of hot air from a powerful back fan into the oven cavity for better heating. Light dosas, idlis, uttapams and more snacks from well fermented batters. Batter Ferment : Light dosas, idlis, uttapams and more snacks from well fermented batters. Cook using very little or no oil, enhancing the taste and nutrition of your food. Reheat, grill or bake. Oil Free Cooking : Cook using very little or no oil, enhancing the taste and nutrition of your food. Reheat, grill or bake.