Recipe for Tuna with Oranges and Shiitakes

Ingredients

• 1 lb 3/4 inch tuna steaks, cut into 4 portions
• 1/4 cup orange juice concentrate
• 2 navel oranges
• 1 Tbsp fresh thyme, chopped
• 1 tsp soy sauce
• 2 cloves garlic, minced
• 1/4 tsp freshly ground black pepper
• 1/4 lb shiitake mushrooms, stemmed and thinly sliced