I have these 2 big cookbooks printed 30 years apart and they both shows recipes like....
For homemade ' Cream of Mushroom Soup' and the fist ingredient is " 1-16oz can of Campbell's Cream of Mushroom Soup."
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Years ago when married to my first wife she had a cookbook printed in the 1800s called "The Pioneer Woman's Cookbook." I remember it had all kinds of stuff like how to make your own yeast starter. And stuff like how to make mouse/rat poison out of plaster-paris with flour mixed in setting next to a dish of water. The mouse eats the flour mixture drinks the water and the plaster hardens in the stomach and then the mouse starves to death. To use Bodark apples to get rid of roaches. And it works