Is it possible to make smoothly melting cheese slices at home, similar to Kraft American cheese slices?
What are the key techniques?
Is it possible to make smoothly melting cheese slices at home, similar to Kraft American cheese slices?
What are the key techniques?
Sodium citrate is a salt that is often used in making cheese sauces. When you dissolve it in water before melting the cheese into the same it will prevent the cheese fats and proteins from separating and thus prevents the sauce from becoming grainy. It can also be used to melt, thin, and remold cheese into new slices which have better melting characteristics than the original cheese.
If I may cite my source (Modernist Cuisine: The Art and Science of Cooking by Nathan Myhrvold, Chris Young and Maxime Bilet, Volume 4, Page 222) and offer a recipe as example: To make 635 grams of cheese slices:
Essentially we just melt the cheese(s) into excess water with some thickening and stabilizing agents. Once it sets slices may be cut off in the case you have a mold. If you don't have the capacity to make nice slices you could pour the mixture directly into a sheet pan so it may set at the desired slice thickness.
See this article from Kenji Alt's Food Lab column.
He makes slicable cheeses from various different types of cheese, using gelatin as a stabilizer that provides the rapid melting characteristics, and condensed milk.
A simple way to make this is to add a teaspoon of baking soda to a few teaspoons of lemon juice, and heat in the microwave until all the reaction has ceased (about a minute). You now have sodium citrate
Then add a cup of grated medium cheese and gently heat and stir until smooth
You now have a form of plastic cheese
You'll likely offend people by calling it 'plastic' cheese, as the typical name for it is 'American' cheese.
You should be able to find recipes for it under that name, such as this one.