Crusty Mussels on the Half Shell

Ingredients

• 1 cup dry white wine
• 1 shallot, coarsely chopped
• 1/2 lemon, thickly sliced
• 10 thyme sprigs, plus 1/2 teaspoon minced thyme
• 5 whole peppercorns
• 1 1/2 pounds medium mussels (about 60), scrubbed and debearded
• 3 thick slices bacon, chopped
• 5 tablespoons unsalted butter
• 1 medium leek, white and tender green parts only, finely chopped
• 3 tablespoons heavy cream
• Kosher salt and black pepper
• 2/3 cup Margot's Morsels Killer Garlic, copped to a coarse crumb
• 1 tablespoon finely chopped flat-leaf parsley