Seems to be somewhat tart. They are mostly skin and peel, making it impossible to get edible quantities, without a stockpot or a steam juicer.
The blossoms contain detectable amounts of clove oil, and are distilled with the juice for a flu tonic.
But, the stems and leaves are reputedly poisonous.
These grow wild, in my area, but mainly around stream beds. In my experience, trees of this nature will tend to have shallow, ranging roots, meaning that they find sewer lines. To stay on the safe side, I planted mine in containers, on top of sheet metal. The roots found their way to the ground...
Some yards get very parched. The trees still survive, but in ragged condition, and with fewer, smaller, harder. blacker berries, which hold on for years.
Well watered berries take on a sort of transparent quality, and get a whitish coating, and are prone to fall off, before becomming fully developed.
Also, the fruit seems to develop much faster, at lower elevations, and sets later, as you travel into the mountains.