
I am not sure, but according to a book, it says the apple Kougyoku is one of varieties which was obtained from the seeds of “Esopus Spitzenburg” of North America.

Today I got three from the tree in my garden. In total I have got four, and that is all for this year. Kougyoku apples are a little sour. So, it is better to cook with heat than to eat fresh one. Now they are in the refrigerator. I am thinking about making them jam.