I ran into this guy at Rural King who was buying a plant and we got to talking about making wine. He told me that he followed the directions, added grapes, etc., but his first batch tasted like alcoholic Kool Aid. 2nd batch he doubled the recommended yeast and it was terrific.I believe @Pulsegleaner is right about them being plums. I have two of these trees. They produce a small, flavorful fruit but mine are really tart. They make great jellies though. I may try to can some for cobblers if it's not too much trouble pitting. We love plum cobblers. I just can them in a simple syrup. The juice is good if you want to drink it. Too sweet for me but the Wildbunch and grands like it.