a) If making in advance and chilling the sauce will solidify. Whisk and gently reheat in the microwave. Repeat whisking and heating in small increments until smooth. Add small amounts of milk as needed to thin.
b) This cheddar cheese sauce was made in an 1000 watt microwave. Make adjustments to the cooking time based on the wattage of the microwave in use.
c) For the best results use 2% or whole milk to prepare.