In a deep pot, bring 4 cups of water and ½ tablespoon of salt to boil. It should taste like sea water.
Add the pasta to the water and cook till just cooked—reserve ½ cup of pasta water.
Heat a pan on low-medium heat, add the sliced mushrooms. Increase the heat to high and cook till the mushrooms have become golden brown.
Add the cream, crushed garlic, pasta water, parmesan cheese, herbs, salt, and pepper to that. Cook for 2-3 minutes till the sauce thickens.
Add drained pasta and give it a mix. Drizzle truffle oil on top.
Garnish with parsley and more parmesan cheese.
Notes
Truffle Oil
If you can get your hands on fresh truffle, go ahead and shave it on top.You can also use truffle paste, butter, or cheese. Black or white truffle oil is a great choice because it's shelf stable, lasts a long time, and a little goes a very long way.Garnish ideasTo make the dish look pretty, you can add fried sage leaves like in the pictures.You can also garnish with fresh herbs like chives and parsley