01 -
Heat a saucepan or small pot to medium heat. Add the butter and melt it.
02 -
Stir in the flour and stir continuously for 2-3 minutes to form a roux.
03 -
Stir in the milk and allow to simmer. It will bubble just a bit around the edges.
04 -
Reduce the heat to low, then stir in the cheese a bit at a time. Continue stirring until it all melts through.
05 -
Stir in the pickled jalapeno juice and some pickled jalapenos, if desired. Keep stirring until the nacho cheese sauce is smooth.
06 -
Taste and adjust for salt, then serve with tortilla chips.