Answer:
The buyer doesn’t want it, the producer doesn’t need it and the user doesn’t know their using it.
It comes from crystal and melts to a treat. Add it to your tea to make it sweet. What is it?
One strand dangles. Two strands twist. Three or more can fashion this.
What is taken before you can get it?
What goes up when rain comes down?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.