1/2 c. butter
1 c. onion, chopped
2 cloves garlic, minced
1 Tbsp. fresh ginger, minced
1 Tbsp. curry powder
2 lbs. butternut squash, peeled, seeded and coarsely chopped
4 c. chicken or vegetable broth
1 Granny Smith apple, peeled, cored and chopped
1 Tbsp. port wine (optional)
salt and freshly ground black pepper
1/4 c. plain yogurt (optional)
pinch each of ground cinnamon and cayenne pepper