One of my hobbies is collecting and reading vintage cookbooks as most involve recipes for simple food made from every day ingredients. I have come across this cookbook Liberty Recipes. It was written in 1918 during the First World War period, when rationing and conserving food was essential. I love the way that the author has created recipes that use substitutes for wheat flour and meat. https://vintagecookbooks.healthyeatingandlifestyle.org/books/1918liberty.html
This is the latest one Canadian Wartime Ration book I am reading. Has some great ways to make a home grown garden stretch with relatively few added ingredients. Wartime Canning and Cooking Book: How to Eat Well through Rationed https://wartimecanada.ca/sites/default/files/documents/How to Eat Well Pt 1.pdf https://wartimecanada.ca/sites/default/files/documents/How to Eat Well Pt 2.pdf https://wartimecanada.ca/sites/default/files/documents/How to Eat Well Pt 3.pdf