Yellowfin Tuna Tartare Yuzu-Wasabi Vinaigrette and Sesame Seaweed Salad
- 2 tablespoons mustard oil
- 6 tablespoons vegetable oil
- 8 tablespoons extra-virgin olive oil
- 1 tablespoon wasabi powder
- 1 1/2 tablespoons lemon juice
- 1 tablespoon rice vinegar
- 1 tablespoon Dijon mustard
- 1 tablespoon yuzu kosho, red
- 2 tablespoons soy sauce
- 12 ounces yellowfin tuna, cleaned and diced into 1/4-inch cubes
- 4 tablespoons finely diced shallots
- 6 tablespoons finely sliced chives
- Seaweed Salad, recipe follows
- 18 gaufrette potatoes, recipe follows
- 3 ounces paddlefish roe (optional)
- Sesame Seaweed Salad:
- 2 ounces dried wakame seaweed
- 1/3 cup rice vinegar
- 1 tablespoon salt
- 1 tablespoon sugar
- 1/2 teaspoon toasted sesame oil
- 1/2 cup soy oil
- 2 small red chile peppers, seeds removed and cut into thin strips
- 4 tablespoons sesame seeds, toasted
- Gaufrette Potatoes:
- 2 large baking potatoes, like russets
- 2 tablespoons clarified butter
Combine the mustard, vegetable, and extra-virgin olive oils in a cup with a pour spout.
In a mixing bowl, combine the wasabi, lemon juice, rice vinegar, Dijon mustard, yuzu kosho, and soy sauce, and whisk well. Slowly add the oils, whisking constantly to emulsify. Taste for seasoning, add salt, and set aside.
Place tuna in a glass or stainless steel bowl. Add the shallots and chives, and toss gently to combine. Drizzle about half of the vinaigrette over the tuna, and mix well. Let the tartar sit for 2 minutes; taste for seasoning, and add more of the vinaigrette or salt, to taste. Leftover vinaigrette will keep, refrigerated, for 1 week.
To serve: shape 1/6 of the tuna tartar into a disc and place it in the center of a serving plate. Arrange 3 dollops of seaweed salad around the disc and garnish with 3 potato slices. Top tuna with a small spoonful of caviar, if desired.Sesame Seaweed Salad:
Place the wakame in a mixing bowl, and soak it in tepid water for 20 to30 minutes. Remove from water, squeeze dry, and trim away the tough spine. Cut into thin strips, and place in a large mixing bowl.
In a separate bowl, combine the vinegar, salt, sugar, and both oils. Pour the dressing over the wakame, add the chile peppers, and toss. Sprinkle with the sesame seeds.Gaufrette Potatoes:
Preheat an oven to 350 degrees. Peel the potatoes, and using a mandolin for best results (you can thinly slice with a knife, but you will not get the criss-cross pattern which makes these potatoes unique), slice them thin in a criss-cross pattern with the zig-zag part of a mandolin. Lay the slices onto a non-stick sheet pan, not overlapping, and brush them with clarified butter. Bake until crisp, about 12 minutes.
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