2 quarts green black walnuts, quartered
4 c vodka
3-4 c sugar
Quarter the green black walnuts. Place in a jar large enough to hold the nuts and liquid. Add vodka (cheap is fine). Cover the jar and place in a cool dark spot for 9-12 months.
Strain the liquid, then mix in sugar to taste. You’re going for a very sweet, bitter and dry liqueur. When in doubt, add more sugar. The dryness from the tannin will fade a bit over time.
Try this now, or bottle and age for at least 6 more months. This should be palatable by Christmas! If not, put it back into storage and try again in the summer.