Steaming food in advertising looks so appetizing. In truth, it isn’t even hot. Besides Photoshop, photographers have other ways to create steam:

A steamer — they pass it over the food a few times to make it "smoke";
Cotton balls — photographers moisten them and put them into a microwave. Then they place them inside a dish, creating a few minutes of steam for the photographers;
A special device to simulate steam.

Watch this video to learn more. Who would think that shooting a baked potato was an art?!