Miso-Marinated Flat Iron Steaks with Shiitake Mushrooms | Red Meat Recipes | Weber Grills | Weber US

Ingredients

• ¼ cup/70 grams miso
• ¼ cup/60 milliliters junmai sake or light beer
• 2 tablespoons hot water
• 1 tablespoon packed light brown sugar
• 4 garlic cloves, minced
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• 4 flat iron steaks, each 6 to 8 ounces and about 1 inch thick, excess fat and any gristle removed
• 2 tablespoons unsalted butter
• 2 tablespoons extra-virgin olive oil
• ½ pound/225 grams shiitake mushrooms, stems removed, or other Asian-style mushrooms, such as king, oyster, or enoki
• 4 large garlic cloves, thinly sliced
• ¼ teaspoon kosher salt
• ⅛ teaspoon freshly ground black pepper
• 1 teaspoon rice vinegar