Use the vinegar sparingly and add it slowly at the end to prevent the cream sauce from breaking; the acidity can curdle the cheese and butter if not properly tempered.

Keep your heat at medium to medium-low throughout cooking to prevent the sauce from separating; high heat will cause the butter and cream to split rather than emulsify smoothly.

Avoid using castor oil as a butter replacement; instead, use high-quality unsalted butter which creates the proper emulsion with cream and cheese that castor oil cannot achieve.

Reserve starchy pasta water and gradually whisk it into your sauce to help bind the ingredients and create a luxurious consistency without breaking the emulsion.

Remove the sauce from heat before adding grated Parmesan cheese and stir continuously to melt it evenly; adding cheese to boiling sauce can cause clumping and graininess.