Pressure cook dehydrated potatoes?

I would put the potatoes in the pot and put in boiling water in the amount needed to rehydrate the potatoes. If all of the water is absorbed and they feel hydrated, I would add another half cup, bring to pressure, then turn of the heat and allow the pressure to release naturally.

You might not even need to allow the pressure to release naturally, since you will be cooking them some more. Try a little both ways before you leave.