Boil the water and then add 1 tablespoon of vinegar.
Next, you need to add the kanten jelly or agar-agar, and then stir well. You can cook it for 2 minutes.
Remove it from the stove and allow it to cool. You can put it into a jar, and then place it in a fridge for around 2 hours. This mixture will become a jelly as it cools.
Now, you'll need to use the tensuki to make the noodles. If you don’t have the tool, then you shouldn’t worry, as you can cut the jelly into cubes.
To make the sauce, you need to mix the ingredients in a separate bowl.
Lastly, serve the noodles and then dip them into the sauce, or just mix the sauce with the noodles.