Does anyone remember Locust Beans? (At least I think that's what we called them.)
Just after World War 2, when food was scarce and sweets were on ration, we kids sometimes had them as a treat.
They were shaped like a flattened banana, had a hardish shiny brown skin which you had to break off. Inside was the soft yellow flesh which you ate. The fruit was very sweet but had a disgusting smell.
Since I grew up I've never met anyone who remembers them.
If you're too young, please ask your granddad or aged aunty.