Timekeeper Distillery - SIsu Coffee Liquor Wausau, Wisconsin, USA Bold cold-brew coffee flavor with chocolate and caramel sweetness, but not overly sugary, making it ideal for espresso martinis and coffee cocktails. The liqueur is specifically crafted as a cold-brew coffee liqueur. NOTES: Sisu Coffee Liqueur is a small-batch cold-brew coffee liqueur produced in Wisconsin, created by brothers Ross and Ryan Jirgl and distilled locally using hand-roasted coffee. It was launched as a craft project celebrating their Finnish heritage and the concept of “sisu” (grit and determination).