Many years ago, about 1960 orso, @ our annual showcase Agricultural 10day long Show. We had all the major Companies preseneting and represented there, as the entire country would descend on Johannesburg, South Africa. The manufacturers of stoves would rope in food demonstraters to give demonastrtions through the day. Besides being a good place for free food, drinks and the like, it was also a good place to rest my leg.
That was where I was taught, by instruction to make a good old Cheese Sauce, lump free, and adaptable for varios uses.%