Cut cheese into thin strips or you can grate it on the large side of a cheese grater. Set aside.
Dice the candied jalapenos and set aside.
Add flour and sugar to a heavy bottom, large saucepan and whisk together.
Next, whisk in the vinegar and then the evaporated milk.
Place over low heat, whisking often until mixture thickens. It is important to cook this on low or it will curdle and it is impossible to get a smooth cheese spread if that happens.
Add the cheese and whisk until cheese is melted and smooth, keeping at a low temperature.
Remove from heat and stir in diced jalapenos and syrup or brine from jalapenos.
Pour into a bowl and cover with plastic wrap, placing the plastic wrap directly onto the cheese so that it doesn’t develop a skin.
Refrigerate for 4 hours or until ready to serve.
Jalapeno cheese spread can be served chilled or at room temperature.