Snip off stems from the outside of the sage plant with a small pair of shears. Cut the stems so they are 3 to 6 inches long and contain two or more leaf sets.
Harvest the sage before it begins to bloom or just as the buds begin to swell. The leaves lose their flavor once the plant begins flowering.
Strip the leaves from the stem after harvesting. Discard the stems.
Use the leaves whole or cut them into smaller pieces, as preferred. Make a pile of three or more leaves on top the cutting board. Coarsely chop the sage into the desired size pieces. Cutting severs and bruises the leaves so they release more oil and fragrance.