Stop in for a cup of coffee
I'm still slowly working on the duster.
I filled up the master cylinder, pumped it and then held the brake pedal down with a dowel stick for an hour. Then pumped the brakes some more and they are actually pumping up. So I might bleed them and attempt to use in the yard.
I have had them dry out before and still come back. Brake fluid is hydrophilic, so I imagine it will evaporate like water ...... eventually