Check what's in that jar

I was impatient and I added some watercolour into a jar that looked like it had some old watercolour in it. I wanted a heavy, gloopy, consistency to pour onto damp paper. Discovered too late that the base was gouache, and it gave a much heavier effect than what I had anticipated. It kept drying before reaching the end of the page, despite me spraying copious amounts of water and keeping the page vertical. Ah well.