Another japanese thing that I use really often: A simple Soup stock for Miso soup. Very convenient, since you can prepare it in advance, store it in the fridge for almost forever and use it fast and straightforward when needed. It’s taken from here.

Recipe:

150 g miso paste
2 tbsp soy sauce
1 tbsp mirin
1 tbsp oyster sauce
1 tbsp shaoxing wine

Mix together and store. Use 1 – 1.5 tbsp. for 1 Bowl of Soup (approx. 300ml). Fill with not too heavy broth.