Agreed, the "eggs with jam" seems to be genuinely made up in the cookbook. I browsed around author's website and she and her husband seem to be "food historians

Agreed, the "eggs with jam" seems to be genuinely made up in the cookbook. I browsed around author's website and she and her husband seem to be "food historians". In other words they travel quite a bit and people pitch recipes to them. Most of the exotic ones they never verify. In this case it seems someone has played a practical joke on them.