White Cheddar Soup (Condensed)

In a medium saucepan over low heat, melt the butter.

Add the flour and whisk thoroughly until smooth cooking for about a minute. (Make sure not to cook too long)

Add milk, salt and ground mustard and whisk until smooth. Continue to heat on low for about 5 minutes until hot enough to melt the cheddar.

Add cheddar and whisk constantly until all cheese is melted and the roux is smooth. Cook for another 3-4 minutes stirring a couple times.

Remove from heat and use immediately or it will thicken really quick.