Rendering steaming coffee

I created a steaming hot cup of coffee for a scene in an animation. When I animate the steam it doesn’t show up. It’s a dusk scene in a car, and I’ve tried to make the steam as white as possible. Can anyone see where the problem is?
I’ve attached the pics of the render settings. It was unavoidable, but it’s done on Blender 2.79.

I finally figured it out, the steam density setting was too low, and also put some color in the steam.