Posted: 28/09/2014 at 17:24
Yes, it is a potato fruit. Potatoes are closely related to tomatoes hence the similar looking fruit. They are very poisonous so don't be tempted to eat one!
The seeds can be collected and grown - this is how new varieties are produced although it is a long process as plants grown from seeds will likely only produce one or two small tubers which would be replanted the next season. Rinse, repeat and after several years you have enough tubers to grow a reasonable crop.