Lined up in tiny glass jars, tinctures offer possible solutions not just for physical ailments (insomnia, constipation, hacking coughs), but emotional and psychosomatic issues (depression, anxiety, ennui). Tinctures embody the “food as medicine” mentality: They’re made from culinary ingredients like ginger and rhubarb, but they’re also considered to be strong medicine.Here’s how they work, and why they’re becoming more and more popular.