INGREDIENTS
3
Onions (about 2 pounds), large
1 qt
Beef stock, Rich
1
Pepper, Freshly ground
1
Sea salt
1
thick Four 1/2-inch-thick slices Sourdough bread
2 tbsp
Butter, unsalted
2 cups
Gruyere cheese
2 tbsp
Sherry, dry
1
Bouquet garni, made with 1 bay leaf, 1 thyme sprig, 2 juniper berries and 2 flat-leaf parsley sprigs, tied in cheesecloth