I used a top light through a red gel above only the beans. I used a piece of black paper over everything behind the gel to keep the background dark.
The beans were sittings on a window screen. A piece of black paper was laid behind the beans and extended upward to create the seamless background.
I used a very small flashlight shining toward the camera at an angle to get the smoke to be white, otherwise it was very red and I didn't like it. I then lit a piece of paper, blew it out, and let the smoke rise through the screen and beans.
- Scott