Preventif Medicine

Yesterday, in stead of taking a shot of soy sauce, I made a traditional recipe:
I dissolved some kuzu in a cup of water (you can use arrowroot too), add a lot of fresh grated ginger, some soy sauce and put that mix on the fire, while stirring. When the mix goes transparent, add a small spoon of miso, and turn off the fire. Keep on stirring till the miso is dissolved.
This is a good medicine when you get a cold or when your digestive system is upset.
Never forget, this is only a symptomatic remedy: you should eat healthier in order to avoid the problem.