A simple, reliable method to flavor a bottle of whiskey at home using whole spices, citrus peels, dried or fresh fruit, or vanilla. The infusion process extracts aromatic compounds to create a balanced flavored whiskey for sipping and cocktails.

1) Choose a base: start with a good-quality bottled whiskey (80–100 proof recommended). Higher proof extracts faster. 2) Prepare container: sterilize a clean 1-quart (or larger) glass jar with an airtight lid. 3) Pick ingredients and amounts (for ~750 ml whiskey):
- Citrus peel (orange or lemon): 2–3 strips of peel (no pith)
- Dried spices: 1–3 whole cinnamon sticks or 3–6 whole cloves or 1–2 star anise
- Fresh fruit (cherries, peeled apple slices): 1/2–1 cup
- Fresh ginger: 1–2 tablespoons sliced
- Vanilla: 1 whole split vanilla bean
- For sweeter infusions optionally add 1–2 tablespoons simple syrup after straining to taste
4) Add ingredients to the jar, then pour the whiskey over them, leaving a little headspace. Seal jar tightly. 5) Infusion times (keep jar at room temperature, away from direct sun; gently invert or swirl once daily):
- Citrus peels: 24–72 hours (taste every 12–24 hours to avoid bitterness)
- Fresh fruit: 3–7 days
- Dried spices / vanilla: 3–14 days (taste every 2–3 days until desired intensity)
- Ginger: 2–5 days
6) Taste frequently. When the flavor reaches your preferred intensity, strain out solids through a fine-mesh sieve. For a clearer result, filter through cheesecloth or a coffee filter into a clean bowl or funnel. 7) Optional: If infusion is too intense, dilute with a small amount of unflavored whiskey. If you want some sweetness, add small increments of simple syrup and mix until balanced. 8) Bottle the strained infusion in a sterilized glass bottle; label with contents and date. 9) Store in a cool, dark place. Refrigeration is not required but can extend freshness if fresh fruit was used. 10) Discard solids—do not keep them in the bottle (they can ferment or become bitter).