With me, that can mean two, three paintings in one session (only two of these shown below). Usually right over the top of less successful paintings, so I don't have to completely cover the entire canvas. The underpainting can inspire the upper, or get totally subsumed - it all depends.
So, the past few days - and check out a new Palette Work squeezed in between larger paintings:
Summer Days and Lost Bamboo Gardens
The Old Kentucky Home
One more Palette Work:
Moonrise, 12 x 12