when applied to drinks, "dry" means "without sugar". therefore it follows that sugary drinks can be called "wet". the meanings of the terms "hot" and "cold" when applied to drinks are obvious. thus the aspect of any drink can be determined.
for instance, green tea, freshly steeped and served without additives, is hot and dry, and therefore has an aspect of fire.
a mocha, on the other hand, while hot, is sweet, and therefore wet, and thus has an an aspect of air.
lemonade, which is wet and cold, has a water aspect.
finally, the drink which most epitomizes the earth aspect, being both cold and dry, is vodka
this is 100% something Rayna (intoxicated) would say with complete seriousness while Owen (also intoxicated) nods sagely and then they have a philosophical conversation about what alchemical properties various mix drinks and cocktails possess.