Wok-Charred Tuna with Miso Sauce - Andrew Zimmern

Ingredients

• 1 3-pound whole piece of center-cut trimmed tuna (buy the best you can get your hands on)
• 5 tablespoons peanut oil
• 1/4 cup finely minced scallions
• 2 tablespoons finely grated ginger root
• 1/4 cup white sesame seeds
• 3 tablespoons black sesame seeds
• 2 teaspoons sea salt
• 1 teaspoon ground white pepper
• 1 teaspoon cumin
• 1 teaspoon cayenne pepper
• Miso Sauce (recipe follows)
• 2 handfuls fresh shiso leaves
• 3 egg yolks
• 1 cup Japanese blond miso paste
• 1/4 cup plus 3 tablespoons sugar
• 1/2 cup sake
• 1/3 cup dashi