If you use Aerobie Aeropress filters, you can actually microwave the coffee without degradation in taste.
This is because the filters do filter out most of the fatty oils that get rancid fastest.
I wonder if there is a way to add something to the steeped coffee, to reduce its acidity?
Above the arctic circle, there are quite a few herbs that make for excellent infusions in alcohol (for taste, I mean). The leaves of vaivaiskoivu (betula nana) and tunturikoivu (betula pubescens czerepanovii; prev. betula tortuosa), a small bush-sized (less than a meter tall) species of birch, also make for a nice tea (even when infused fresh).
I've mentioned I drink quite a bit of tea also, almost exclusively black teas. There, the water temperature seems to be critical regarding the total flavour profile of the tea. (Something to do with tannins? I dunno.) I've often wondered how to cobble together something to provide a cup of pure water at the desired temperature.
I wonder if coffee grounds have a similar temperature dependence, just closer to boiling? Has anyone tried steeping coffee in a pressure pot, to steep at well over 100°C water?