Published this month is a new Norwegian Fruit and Vegetable Encyclopedia written by Kari Vetlesen
Among its pages you will find both Hablitzia and Hosta (mentioned for the first time in a Norwegian book as edible?)
Unreleated, I hadn’t seen the following article about eating Hosta before: https://www.pressherald.com/2017/06/04/flower-power-on-your-plate
The picture is mine (entitling me to a free copy of the book!), taken in the Oslo Botanical Garden some years ago! Note that older leaves are also good (cooked)!