The last thing you expect to find in a recipe book

I’ve just returned from a trip to New Zealand over Christmas - my first time back since before covid. While there, I was looking through an old handwritten recipe book, which my mother inherited from an aunt (or great aunt, I forget now), and on the back of one of the many recipe newspaper cuttings (which were pasted in, but eventually worked themselves loose over the past 50 years or so), I found…