never heard of it but this is what Google found
Ingredients
1 cup vodka
1 sprig fresh dill
One (2-inch) strip of lemon zest, without pith
1/2 teaspoon caraway seeds
1 pod star anise
1/4 teaspoon fennel seed
1 Put the vodka, dill, and lemon zest in a sealable glass jar. Seal and shake, then let steep at room temperature for one day. Remove and discard the lemon zest and dill.
2 Add the caraway seeds, star anise, and fennel seed to the infused vodka. Let steep at room temperature for an additional 2 days. If you’d like a stronger flavor, continue to steep for up to two weeks. When desired flavor is achieved, strain through cheesecloth. Store at room temperature or in the refrigerator for up to 6 months.