My wife is a descendant of German immigrants. When I married her, her family always had this stuff sitting around. When we lived in South Texas in the 70's, we could buy it at Krogers, etc. Later we acquired a home-made recipe from a family member, and have been making it ever since. It is delicious, very lo-cal, and is made from cottage cheese.
Recipe - In a bowl, put one tsp. baking soda into a carton of cottage cheese. Cover with saran wrap and let sit for several hours until it has fermented and lost it's original texture. Then grate 3 oz. of Monterey Jack over the cottage cheese and microwave in short segments (30 secs.) stirring in between until the cheese melts into the cottage cheese. Don't cook it - be gentle! Use a hand mixer and blend the mixture until smooth. Add caraway seeds to taste (1-2 tsp.), put mixture back into the cottage cheese container or other containers, refrigerate, and enjoy on toast, rye bread, or English muffins.
I love it!