Lentil and Goats Cheese Crostini

Name: Lentil and Goats Cheese Crostini
Ingredients: 1 head garlic; Vincotto (grape must) or good quality aged balsamic vinegar, to serve; 2 cups beluga (black) lentils; 1 (4-ounce/125 g) piece bacon; 1 onion, quartered; 1 carrot, quartered; 1 celery stalk, quartered; 2 cups red wine; 2 cups veal stock; 1/4 cup brown sugar; Sea salt and freshly ground black pepper (recommended: Maldon sea salt); 4 thick slices of country bread; 1/4 cup olive oil; 1/4 cup goat cheese; 12 cherry tomatoes; 1 cup olive oil, for poaching; 8 slices pancetta; 1 teaspoon butter, plus more for sauteing; 4 large pieces Swiss chard, blanched