Rinse fresh blackberries under cool water and pat them completely dry.

Wash a 1-quart glass jar with hot soapy water, rinse thoroughly, and air dry.

Add half of the dried blackberries to the jar and sprinkle with half of the granulated sugar, then layer the remaining berries and sugar.

Combine 1/2 cup water with any remaining sugar in a small pot, heat over medium until sugar dissolves completely (about 2 to 3 minutes), then cool to room temperature.

Pour 1 quart of high-proof vodka over the berries and sugar, then add 2 tablespoons fresh lemon juice and 1/2 teaspoon vanilla extract.

Stir gently with a wooden spoon to combine, being careful not to crush the berries, then add the cooled simple syrup and stir again gently.

Seal the jar tightly and store in a cool, dark place away from direct sunlight.

Shake the jar vigorously for 10 to 15 seconds every morning and evening for the first seven days.

After one week, stop shaking and let the infusion sit undisturbed for an additional two to three weeks. Taste at the three-week mark and extend if needed.

Line a fine mesh strainer with cheesecloth over a bowl and pour the contents through, allowing the liquid to drip naturally without forcing.

If sediment remains, strain again through fresh cheesecloth, then transfer the clarified moonshine into clean glass bottles, seal tightly, and label with the date.