How do you identify edible juniper berries?

A Juniper berry is the female seed cone produced by the various species of Junipers. It is not a true berry but a cone with unusually fleshy and merged scales, which give it a berry-like appearance.

yes

Yes very much so, I once had one myself and it was quite delicious. If you actually experience the delightful moment of when a Sassafra Berry melts in your mouth, it's ludicrously amazing.

The rule for berry edibility (for survival) is: blue, purple, black = 90% good red = 50% good white, yellow, green = 10% good cluster berries (any colour) = 99% good

there are no simple rules...when in doubt throw it out!