The Kakai squash I am told originated in Austria & was grown all through Europe & parts of Asia. This squash or pumpkin has edible hull-less seeds which are very tasty as is, or roasted. Some types apparently have a tastier flesh than others. The one we are growing which you can see in the attached images tastes more like a marrow, but is still very nice.
Roasted Kakai seeds or pepitas.