Asian Inspired Shepherds Pie

Name: Asian-Inspired Shepherd's Pie
Ingredients: 1/2 Cup diced carrots; 1/2 Cup diced celery; 1/2 Cup diced onion; 1/2 Cup diced green onion; 4 cloves of garlic, minced; 1 Cup shiitake mushrooms, sliced in half; 1 Cup shelled edamame; 1/2 Cup dry white wine; 1 Pound leftover turkey meat, off the bone, pulled apart or chopped; 4 Cups gravy; 1/8 Cup soy sauce; 1 Tablespoon sesame oil; 6 Cups mashed potatoes or mashed Japanese sweet potatoes; 2 Tablespoons olive oil; Crumbled nori or toasted sesame seeds, for garnish; Salt and pepper, to taste