It is pretty simple.
There are a few method to get it better, but I will write simplest method here.
2 inch by 1/2 ich kelp
2 litteres of water.
If you like to get more umami, add a few pieces of dried shiitake.
Boil a piece of Konbu( and shiitake) from cold water, once it reached boiling, stop heat and leave it for a while.
Konbu will be slimy so take it out when it's cool down.
You can keep it in your freezer or fridge.
Tomoko Tahara A.K.A.#cookhatter
<Restaurans in Vancouver>
The Acorn : Vegetarian restaurant
The birds and beets : Cafe
Cacao Vancouver:Modern latin
The mackenzieroom:Modern coastal
Birds and beets
Tempea food: tempeh maker
<Restaurant in Japan>
Bon Gout: Bakery and wine
Bar Pancho:Spanish tapas
Takanoya :Gastro pub