The Secret Ingredient (Sesame): Seared Sesame Tenderloin Skewers

INGREDIENTS

• 1/4 cup tamari
• 1/4 cup ponzu
• 2 tablespoons toasted sesame oil
• Small splash of mirin
• 1 teaspoon grated fresh ginger
• 1 clove garlic, grated
• 2 tablespoons fresh cilantro, chopped
• 2 scallions, thinly sliced
• Chopped fresh chili to taste
• 3/4 pound beef tenderloin, cut into 1- to 1 1/2-inch cubes
• 1/4 cup white sesame seeds
• 1/4 cup black sesame seeds