Suppose you have a food that is naturally liquidy, such as curry. You like the flavor but need it less "wet". The problem with drying it is that the aromas also get lost to an extent. However, graphene oxide is selectively permeable to water. Is it practical to dry your fruit, sauce, or other foodstuff in a container covered by a sheet of graphene oxide, letting the water out but keeping the aromas in? 
There's a reason it's termed "Fresh Brewed". Tea and coffee only stay fresh for so long. It can be kept hot, not fresh. 