From HandWiki - Reading time: 1 min
Branch water is:
- Water from a natural stream (a term primarily used in the southern United States) that has been acquired as close to the source as possible.
- Popularly/commonly the addition of plain water (rather than soda water) to a mixed drink. This water may have been naturally limestone-filtered by passing through underground limestone. For example, "bourbon and branch" refers to bourbon whiskey with water.
- Water that is steeped with a fresh young branch of a Douglas Fir tree, imparting upon it a distinct resinous flavor. This is distinct from natural stream water, which is steeped in a profusion of fallen brush and streamside plant material.
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