Harvest rosehips after the first frost when they are ripe and red. Remove stems, leaves, and blossom ends. Rinse well.
Chop rosehips coarsely or crush them lightly with a wooden spoon. Place in a glass jar.
Pour enough vodka or brandy over the rosehips to completely cover them. About 2 cups of vodka per 1 cup of rosehips.
Seal the jar tightly and store in a cool, dark place for 4-6 weeks, shaking occasionally.
After infusion, strain the liquid through a cheesecloth or fine mesh sieve into another clean glass jar.
Squeeze the rosehips to extract as much liquid as possible. Discard the used rosehips.
Store finished rosehip tincture in a sealed glass jar in a cool, dark place. It will keep for 2 years.
Take rosehip tincture diluted in water or tea. Dosage is typically 2-5 mL taken 1-3 times per day.