This is how KLM plans to serve draft beer at 35,000 feet
Flying at 35,000 feet has always been a challenge for airlines in the culinary department. Our taste buds are about 30% less receptive to sweet and salty foods, making meals a bit less enjoyable. The reduced air pressure has also hindered airlines from serving draft beer straight from the tap, but KLM and Heineken have found a solution to this. It’s not the first time draft beer is being served on board a flight, but KLM’s technique seems to be more practical. Traditional carbon dioxide cartridges and tanks cannot be used at cruising altitudes as the low air cabin pressure results in a mostly foamy drink, which no one really wants.