OK, so let’s say you’ve made your lump of paint (not a teaspoonful as the books so wrongly say). You’ve also discovered the benefits of diluting it a little at a time to make the consistency and darkness of paint that you need for your next sequence of brush-strokes.

And then it’s time to stop for the day.

But when you return, of course your lump of paint is dry. Really dry. Dry as a bone in fact.

What do you do to bring it back to life?