Bring 8 cups of water into a rolling boil over high heat. Add salt. Add the spaghetti noodles and cook until al dente. Reserve ½ cup of the pasta water and discard the rest. (drizzle some oil to the pasta if they are too sticky).
8 cups water, 1 tablespoon salt, 8 ounces spaghetti or fettuccine
In a large skillet, heat oil and butter over medium heat. Add the prawns in a single layer. Sprinkle some salt and pepper over the prawns and cook turning it once until both sides are cooked, about 2 minutes each side. Remove from heat to a bowl so not to overcook.
1 tablespoon olive oil, 2 tablespoon unsalted butter, 250 grams raw frozen prawns, Salt and pepper to taste
Add the garlic and saute just antil soft and aromatic. Stir in the shiitake mushrooms and cook for a minute. Add ¼ -½ cup pasta water and simmer for a minute or two.
4 cloves garlic, ½ cup shiitake mushroom, ¼ -½ cup pasta water
Pour in the heavy cream and add the grated parmesan. Bring to a gentle simmer but do not let it boil.
250 ml heavy cream, ¼ cup parmesan cheese
Turn off the heat and add the cooked pasta and prawns. Add the chopped parsley and toss until noodles are fully coated with sauce.
1 tablespoon parsley
Transfer to serving plates and sprinkle with more grated parmesan and parsley as desired.