Elderberry

Gathered from

Resource	Profession	Tool	Quantity	Chance
Wildberry Bush	Herbalism	Herbalism	1	1% (1 in 100)

Chance per successful gathering attempt, from the game's resource data. Whether an attempt succeeds at all is a skill check against the node, so it depends on the gatherer and is not a number this wiki can state. Quantity is the most one attempt can give; how much of it you get rises with skill.