Carefuly cracking and removing the Jujube seed shells worked great for me. 100% sprouting quote and it took only 2-3 days. With this particular tool, which englush Name I dont know, its easy to open the shells Carefuly step by step..
I've lurked for awhile, but I just signed up for an account so I could let you know. Those round jujube seeds are actually grown for the seed, not the fruit. (The name spinosa is another clue) That is why they're available to buy in a pack. They are typically cracked and then boiled to make a tea. It is used in Chinese medicine to help with insomnia and is supposed to be calming for children with ADD. There is a region in China that grows a lot of that herb, but I don't know if the fruit part is typically eaten or not. It seems like a lot of the varieties for eating fresh have long pointy seeds, although I think I have purchased dried ones with round seeds. I'm guessing perhaps those are ones for drying. My Chinese relatives (I'm not Chinese) tell me that some are not meant to be eaten as a snack, just dried and used in tea or soup. The dried fruit boiled in a tea is also traditionally used to help with insomnia, and I think anemia.