Right now I have 2 more potato plants in bloom. It would be nice to see them produce berry's too.
I cringe when i see people post photos, wanting to know what that fruit is on there plant. And people reply "They are poisonous, and tell them to dispose of them. " Yes they are if you eat them. But so are many other plants. They are meant to harvest the seed and create new breeds of potatoes. Not food. I wish more people would try to grow from seed. It is fun to see what develops..
There are other ways. Like with tomatoes. You remove the seed and ferment.
Some people add yeast to help ferment.
Some put there berry's in a blender to break them up.
But I prefer just to open the berry and remove the seed like you would do a tomato.