Tamagozake

 is a drink consisting of heated sake, sugar and a raw egg. It translates as "egg sake", being made of the kanji 卵 "tamago" (egg) and 酒 "sake".
Use as a cold remedy.
Tamagozake is a traditional home remedy for the common cold in Japan, however there is no medical proof of its efficacy.
Even though it is an alcoholic drink, it is sometimes given as a cold remedy to children as well as adults, much as hot toddies are used in Western countries.
Recipe.
Like most home remedies, there are several variant recipes for tamagozake, but the basic properties are the same.
Ingredients: 
For a non-alcoholic version, milk may be used as a substitute for sake.