Why can pine shoot liqueurs become bitter?

Expanded Explanation

Pine shoot liqueurs can become bitter when the infusion extracts too much resin, woody material, or mature green tissue. Young shoots are best when they are soft, fresh, and harvested at the right stage. If the shoots are older, dry, damaged, or mixed with tough stems and mature needles, the alcohol can pull out sharper compounds. This bitterness often appears after the pleasant fresh-pine aroma has already been extracted.

Over-maceration is another major cause. A few extra days may be fine, but several unnecessary weeks can change the character of the infusion. Instead of bright forest notes, the flavour may become dry, harsh, and medicinal. Strong alcohol can make this happen faster because it extracts resin and bitter compounds more aggressively. Heavy crushing or chopping can also increase extraction and reduce control.

Bitterness may be reduced slightly with honey, sugar syrup, lemon juice, or blending with a softer liqueur, but prevention is better. Use tender shoots, avoid excessive woody pieces, keep the alcohol strength moderate, and taste regularly. Strain as soon as the aroma is fresh and complete. A good pine shoot liqueur should have a clean woodland edge, not a lingering bitter finish.