Red Miso Marinated Steak

Ingredients

• 1/4 cup red miso paste
• 1/4 cup mirin
• 3 Tablespoons sake or dry sherry
• 3 Tablespoons coconut sugar or light brown sugar
• 2 Tablespoons soy sauce
• 2 cloves garlic, minced
• 1 Tablespoon grated fresh ginger
• 1 Tablespoon toasted sesame oil
• 1/4 teaspoon ground black pepper
• 1 porterhouse steak