Berliner Luft

Berliner Luft (Homemade Berlin Mint Liqueur)

A clear, peppermint-and-eucalyptus herbal liqueur from Berlin, traditionally built on neutral grain spirit, lightly sweetened and bottled at around 18 percent ABV. The homemade version uses food-grade essential oils rather than fresh herbs to capture the bright, almost pharmaceutical snap of the original.

Prep

20 min

Cook

10 min

Total

30 min

Serves

About 700 ml (24 fl oz)

Difficulty

Medium

Recipe ingredients

• •500 ml (2 cups + 1 Tbsp) neutral grain spirit (96% / 190 proof), German Doppelkorn or vodka works; higher proof gives the cleanest extraction.
• •200 ml (3/4 cup + 2 Tbsp) distilled water, Use distilled, not tap, to keep the liqueur crystal clear.
• •150 g (3/4 cup) granulated sugar
• •2 drops food-grade peppermint essential oil, measured in drops: 2 drops total for the whole batch. Must be labeled food-grade / for internal use. This is a true essential-oil liqueur, not an infusion of fresh leaves.
• •1 drops food-grade eucalyptus essential oil, 1 drop total, no more. Food-grade only, and treat this bottle as a medicine, not a seasoning: eucalyptus oil is toxic in small amounts.
• •1 drops food-grade lemon essential oil, Optional, but a single drop lifts the mint the way the commercial version does.

Steps

1. 1 Make a simple syrup: combine the 200 ml distilled water and 150 g sugar in a small saucepan, heat gently over medium until the sugar fully dissolves, then simmer 2 minutes. Cool completely to room temperature. Do not shortcut this; any warmth added to the alcohol will flash off volatile top notes.
2. 2 Sterilize a 750 ml bottle and its cork or screw cap by rinsing with boiling water, then drying thoroughly. Residual water will dilute the ABV below the target 18 percent.
3. 3 Pour the 500 ml of neutral grain spirit into the clean bottle. Add the cooled sugar syrup and seal. Swirl gently for 20 to 30 seconds until fully combined.
4. 4 Dose the oils straight from the dropper into a small glass of the spirit, not from the bottle into the main batch. Add 2 drops of peppermint essential oil and 1 drop of eucalyptus essential oil, plus the optional single drop of lemon oil. Stir, then taste one quarter of a teaspoon of that spirit. A food-grade oil is extremely concentrated: 1 drop of peppermint oil carries roughly 30 to 40 mg of menthol, which is far more than a serving of this liqueur should carry, so never go past these counts. If the taste is too faint, do not add more oil; instead let the bottle rest the full 48 hours, when the flavour rounds out.
5. 5 If you used the small glass of spirit for tasting, return it to the bottle, and top up with a few ml of distilled water or spirit so the batch volume is back to roughly 700 ml. Seal and shake gently for 1 minute so the oils disperse evenly.
6. 6 Rest the bottle at room temperature, out of direct sunlight, for at least 24 hours and ideally 48 hours so the aromatics fully meld. Expect the liqueur to look perfectly clear; cloudiness means the syrup was not cool enough before combining. A faint oil slick on the surface is normal: give it another gentle swirl before serving.
7. 7 Chill thoroughly (at least 3 hours in the refrigerator) before serving. Serve in small chilled glasses, straight from the freezer if possible, as a digestif. Pour over a scoop of vanilla ice cream, or top with chilled club soda or tonic over ice for the classic Berlin long drink. Keep the bottle sealed and stored cool; the high alcohol and sugar content make it shelf-stable for many months. Do not give to children or anyone avoiding alcohol. Serve one small glass at a time and never on an empty stomach: the peppermint and eucalyptus oils are potent at this concentration, and the drink is strong (about 18 per cent alcohol).