Last week, I prepared a tincture of pine pollen cones. Here's the procedure I followed: I filled a quart glass jar with the cones, then filled that jar again (that's right, I filled the jar twice!) with 80 proof vodka. Then I covered, shook, and labeled the jar. In about a month, I'll strain out the cones and be left with the finished liquid extract.
Tinctures are a convenient way to concentrate and preserve plant constituents. Soaking in vodka allows both water-soluble and alcohol-soluble constituents to be extracted from the cones. Pine pollen tinctures can be purchased (SurThrival is one source), but making one is a simple enough process, so long as you manage to collect your own cones. If you missed this year's harvest, mark your calendars now for next spring.