I usually paint with reconstituted dried gouache stored in full and half pans in my watercolor tins. I use this setup because it’s portable and all the colors I would possibly want to use are readily available any time. I learned this setup from an eCourse I took a couple of years ago called Oh My Gouache!. It’s a great class — fun and casual and full of tips and tricks.
Inspired by Leah Goren’s gouache class, I used fresh paint from the tubes, mixing colors as I needed them. It felt immensely frustrating at first, but after struggling for a couple of hours, I grew to like it, and I would it even go so far as to say that I enjoyed painting this way! Going forward, I plan to use fresh gouache in my studio and reserve my precious palettes for painting on the go.