Stir chopped fir needles into the sugar in a canning jar. Place a paper towel over the jar and secure it with the canning ring. This allows water from the needles to evaporate while preventing anything “extra” from landing in the jar. Infuse for 1 week, stirring daily to break up clumps. Strain the sugar through a fine mesh strainer to remove the needles. Store in a clean jar with a lid. Some folks like to blend the needles in for a lovely green color, but this results in the bitter components of the needles becoming part of the flavor.