I make my own jello.  I buy the knox brand plain packets of gelatin and use tart cherry juice.  Tart cherry juice is really sour, so I add 1 1/2 TBS of sugar per packet. Black cherry juice makes good jello, too.   It's a good dessert.  I've been putting whipped cream on top.  You can also blend a few black cherries and some honey nto the whipping cream for the topping.