What is the difference between a roux cheese sauce and an all in one?

A roux cheese sauce is a type of cheese sauce that is made by first making a roux, which is a mixture of flour and fat that is cooked together until it becomes smooth and creamy. Then, milk is added to the roux and cooked until it thickens. Finally, cheese is added to the sauce and stirred until it melts.

An all-in-one cheese sauce is a type of cheese sauce that is made by simply combining all of the ingredients together in a saucepan and cooking them until the cheese melts. This type of sauce is quicker and easier to make than a roux cheese sauce, but it is generally not as smooth and creamy.

Here is a table that summarizes the key differences between roux cheese sauce and all-in-one cheese sauce:

| Feature | Roux cheese sauce | All-in-one cheese sauce |

|---|---|---|

| Method | Made by first making a roux, then adding milk and cheese | All ingredients are combined together and cooked until the cheese melts |

| Texture | Smooth and creamy | Not as smooth and creamy as roux cheese sauce |

| Difficulty | More difficult to make than all-in-one cheese sauce | Easier to make than roux cheese sauce |

| Time | Takes longer to make than all-in-one cheese sauce | Quicker to make than roux cheese sauce |