Nigella Lawson's Linguine with Lemon, Garlic, and Thyme Mushrooms

INGREDIENTS

• 2 to 3 tablespoons freshly grated Parmesan, to taste
• 1 tablespoon Maldon or kosher salt or 1 1/2 teaspoons table salt
• 1/3 cup extra-virgin olive oil
• 1 lemon, zested and juiced
• 4 sprigs fresh thyme stripped to give 1 teaspoon leaves
• Freshly ground black pepper
• 1 small clove garlic, minced
• 1 bunch fresh flat-leaf parsley, leaves chopped, to give 1/2 cup
• 4 cups (8 ounces) finely sliced cremini or button mushrooms
• 1 pound linguine or other pasta shape