https://www.gutenberg.org/ebooks/77397 — "How to Make Sweet Potato Flour, Starch, Sugar, Bread and Mock Cocoanut" by G.W. Carver. Pub. 1918.
Should you some time have an excess of sweet potatos, you could try to make flour, starch and sugar from them, and then try out the recipes.
"I'm so short that if I tell a girl her hair smells nice, she's legally allowed to smack me."