I see it as a practical validation that the immune system is working!
OK, so you will not drink the coffee, etc if it comes from the onboard tanks, no doubt filled with the best that Khartoum had available at the time, but
the same crew who avoids the coffee all flight is quite happy to change and pop out for a quick curry downroute in Bangladesh!
lets face it, we have NO idea what is in about 90% of what we eat, drink, but for the most part we survive it with little or no ill effects.
and worrying about the relative boiling ratio vs cabin altitude! thats one way to while away the cruise.
perhaps best just to rip the packet of nescafe gold open and eat it! problem solved.
add powdered milk and granulated sugar to taste.
