The very sourdough starter we use to make our bread. Comes to you in a plastic bag, ready to transfer to your own jar. Everyone asks + the real answer is: I don't know, but best guesses is the original starter was made in at least 2015. We've made sourdough starter of our own and gifted it to family. We've moved + brought it along. We've received starter from family as well. Is this the original we made many years ago, or a received gidft? Who knows. What we do know is it makes darn good bread.