How do you keep alfredo from separating?

To prevent Alfredo sauce from separating, ensure you use high-quality ingredients, especially fresh cream and cheese. Gradually heat the sauce on low to medium heat and avoid boiling, as high temperatures can cause separation. Additionally, continuously whisk the sauce while incorporating the cheese to create a smooth emulsion, and consider adding a touch of starchy pasta water to help bind the sauce. Lastly, serve immediately after preparation for the best texture.