Yamakake variation 山かけバリエーション

This is a variation of "Yamakake" 山かけ. Since the frozen block of yellowfin tuna キハダマグロの冷凍冊 I had in the freezer was getting old, I decided to use it. I divided the block into three portions and tried to make three different dishes. Since frozen yellowfin tuna is not the best quality tuna, I made thick slices and marinated all of them in concentrated Japanese noodle sauce (from the bottle) or "mentsuyu" 麺つゆ. I used to make the marinade myself but I am getting lazy. Grated nagaimo 長芋 (or yamaimo if you can get it) with tuna sashimi "Yamakake" is a "golden" combination.  This variation is based on a recipe I saw on line. I made a sauce (dissolving wasabi in soy sauce) separately and placed it in a small squeeze bottle so that I could add any amount I liked after the dish was assembled.

For greenery, the recipe called for "Daikon" sprouts which I did not have so I just used thinly sliced American mini-cucumber.

Instead of grating nagaimo, I made small chunks by crushing it in a Ziploc bag using a meat pounder. This is called "Tataku". Most frequently, this is done to cucumber called "tataki kyuri" 叩き胡瓜 so that the seasoning will cling better to the irregular surface. For nagaimo, this process gives a nice crunchy texture (chunks) with a grated texture along the edges of the chunks.  We like this combination of the textures very much.

One more additional step was called for in preparing the tuna. After a few hours of marinading, I sandwiched it between hydrated kelp which is called "Kobujime" 昆布締め. This is usually done for white meat fish but as per the recipe I added this step.  I did this for 1 hour. Before cutting the tuna in into smaller cubes.

We really liked this version of yamakake. We are not sure "kobujime" process really added much though. In any case, this was definitely wroth trying again (hopefully with better quality tuna sashimi).