The producing is the hard part, if they have a bit of heat harvesting will be a minor problem. Warm the liquid and evaporate the alcohol. Find a moonshiner, they’ll work it out.
I would think the problem is that it will evaporate from the ponds prior to harvesting it.
actually, what they need is a cold sunny climate that will prevent evaporation.
Maybe that is what they are going after in New Mexico, there are some areas in the north that are cold but as sunny as the hot areas.