6 slices bacon, cut crosswise into thin strips
1 onion, chopped
1 cup lentils
2 teaspoons salt
1/4 teaspoon fresh-ground black pepper
1 1/2 teaspoons dried rosemary, crumbled
1 bay leaf
9 cups water
1 small head cauliflower, cut into small florets
1/3 cup chopped fresh parsley