French Onion and Endive Soup

Name: French Onion and Endive Soup
Ingredients: 2 spanish onions, thinly sliced into 1/2-moons; 2 endives, thinly sliced into 1/2-moons; 2 teaspoons butter; 1 tablespoon extra virgin olive oil; 1 teaspoon salt; 1 teaspoon cracked black pepper; 1 tablespoon finely minced garlic; 1 teaspoon ground coriander seed; 2 teaspoons rosemary (dried or fresh); 1 teaspoon thyme (dried or fresh); 1 bay leaf; 1/3 cup dry white wine, good enough to drink; 2 tablespoons good balsamic vinegar; 1 tablespoon raw sugar; 3 cups low-sodium vegetable stock; 4 handfuls parmigiano reggiano cheese: grated; 1 piece parmigiano reggiano cheese: rind