Vegetarian Pasta with Asparagus | White Wine Pasta Sauce

Ingredients

• 10 stalks asparagus (ends removed)
• 1 tablespoon olive oil (divided)
• 1/2 teaspoon salt (divided)
• 12 ounces fettuccine (uncooked)
• 1 cup dry white wine
• 3 shallots (chopped)
• 1 to 2 lemons
• 1 1/2 cups whipping cream
• 1/3 cup Parmesan cheese (plus 2 tablespoons grated, divided)
• 1/8 teaspoon cayenne pepper
• 4 tablespoons butter
• 1 tablespoon chives (minced, optional)
• 1 tablespoon mint (minced, optional)
• a third lemon (optional)