- Bring a large pot of salted water to a boil. 
- Add the fresh fettuccine and cook for about 4 minutes until tender yet firm. 
- Drain and set aside. 
- In a large skillet over low heat, melt the butter. 
- Add 2 cups of heavy cream and the lemon juice, stirring well. 
- Let it simmer for a couple of minutes. 
- Incorporate the grated Parmesan into the skillet, stirring continuously until the cheese melts completely. 
- This will thicken the sauce slightly. 
- Step 4: 
- Add the cooked fettuccine pasta into the sauce. 
- Toss it gently to ensure every strand is well-coated with the creamy mixture. 
- Finish with the remaining 0.5 cup of cream. 
- Sprinkle salt and white pepper to your taste, cooking briefly until the sauce is thick and luscious.