Porcini Mushroom Pasta

Name: Porcini Mushroom Pasta
Ingredients: 1 tablespoon olive oil; 1 tablespoon unsalted butter; 3 garlic cloves, minced; 1/2 onion, chopped (or two shallots); 1 tablespoon fresh thyme leaves; Kosher salt and freshly cracked black pepper; 1 ounce dried porcini mushrooms; 6-8 ounces other mixed mushrooms, cleaned and sliced; splash white wine; Porcini soaking liquid; Zest from half a small lemon; 1/3 cup freshly grated parmesan; 1/3 cup freshly chopped flat leaf parsley; 3/4 pound linguine