Mix the oysters together with the coarse salt and the katakuriko. Don't add water and gently mix together for about 10 seconds. The trick is to not add any water!
Once you have mixed it for about 10 seconds, add 50 ml of water and then gently mix for about 20 seconds. Try not to massage them! This will draw out the sliminess and the grit.
Transfer the oysters into another bowl and rinse in 3% salt water. If you're just using water with no salt, rinse real quickly in about five seconds.
Drain well in a colander and dry well with paper towels. You are done prepping!
Story Behind this Recipe
It's such a waste to use grated daikon (traditional Japanese way to clean oysters)!
Simply mix them gently. Try not to massage them. They will lose their freshness quickly so prepare the oysters just before cooking! I also run a blog by the way! Please check it out! http://ameblo.jp/cooking-s-papa/entry-11729270487.html.