By Magnus von Kageneck, cellar master (who he is) · Updated: September 2026
At the end of September the last elderberry clusters are still hanging, the quinces are turning yellow, there are still berries from the summer in the freezer, and in the hedge the sloes are waiting for the frost. By Christmas, all four can become a liqueur worth giving away. Nothing has to ferment for it. Shop-bought, duty-paid alcohol, fruit and sugar are enough, and because you measure out each ingredient separately, strength and sweetness are in your own hands.
Two routes lead there. Berries and sloes steep directly in the alcohol. Elderberries and quince you first turn into juice and then blend. Which fruit belongs on which route has its reasons, and they have to do with poison, jelly and water.
Which alcohol belongs in the bottle
Use shop-bought drinking alcohol: Korn (German grain spirit), vodka, rum or a fruit brandy that suits the fruit. Methylated spirits and home-distilled alcohol have no place in a drink; distilling privately is prohibited anyway. Vodka tastes the most neutral, Korn slightly of grain, and rum, with an aroma of its own, goes well with sloe and dark berries.
You calculate with the strength on the label. Korn often has only 32 % vol, vodka under EU law at least 37.5 and often 40, and rum also comes at 54 % vol. If an unsweetened spirit states no strength, for instance because it comes from a distillery, an alcoholmeter will determine it to within about 1 % vol. In the finished liqueur the instrument is no longer any use: the sugar lifts it, and it reads too low.
The bar is set by EU spirit drinks law, and it works for a gift too: there, a liqueur has at least 15 % vol and 100 g of sugar per litre. The 15 % vol is not a formality: below that mark, yeasts, moulds and bacteria find work again, and every fruit brings them along, even freshly washed.
Calculate first, then start the infusion
Every fruit brings water with it, and that water dilutes the alcohol. Raspberries are about 86 % water, and dissolved sugar takes up around 0.6 ml per gram. Over time juice and alcohol even out, so stay on the safe side and calculate as if all the water from the fruit ended up in the infusion:
Alcohol in the infusion (% vol) = pure alcohol (ml) : total liquid (ml) × 100
| 1 litre of spirit, 200 g sugar | 500 g berries | 1 kg berries |
|---|---|---|
| Water from the berries (about 86 %) | 430 ml | 860 ml |
| Sugar, dissolved (× 0.6) | 120 ml | 120 ml |
| Total liquid | 1550 ml | 1980 ml |
| with Korn, 32 % vol (320 ml pure alcohol) | around 21 % vol | just over 16 % vol |
| with vodka, 40 % vol (400 ml) | around 26 % vol | around 20 % vol |
| with rum, 54 % vol (540 ml) | around 35 % vol | around 27 % vol |
With 500 g of berries to a litre, any ordinary spirit stays well above the limit. A kilo still works with vodka; with Korn you end up at just over 16 % vol, and every bit of extra sweetening pushes the figure down further. More fruit calls for a stronger spirit, not a fuller jar.
Berries and sloes: let them steep
For raspberries and blackberries, fresh or from the freezer:
- Pick over 500 g of ripe berries, crush them lightly in a clean, wide jar and mix them with 200 g of sugar. Leave them to stand for an hour.
- Pour a litre of vodka or Korn over them until everything is covered. A small glass saucer keeps anything floating below the surface.
- Close the jar and keep it cool and dark for about four weeks. Swirl it every day until the sugar has dissolved, and now and then after that.
- Pour everything into a dense cloth and twist it firmly over a bowl; whatever stays in the berries is spirit you have paid for.
- Taste and add more sugar if needed, up to about 300 g per litre of spirit in total. After that the liqueur gets a few quiet days before it goes into the bottles.
Sloes work the same way, with two differences. First, the frost: the juice of ripe, unfrozen sloes contains up to 10 g of tannin per litre, ten times as much as a mild red wine. If the fruit hangs on the bush overripe and frozen through, the figure drops below 5 g. Whether the freezer can stand in for the frost is a point on which sources disagree; taste a berry first. Second, the stones: crush the fruit without breaking a single stone, because the kernels contain substances from which hydrogen cyanide forms. That is why sloes steep for only three to five days, not until Christmas. Their juice has around 24 g of acid per litre, so use 250 to 300 g of sugar straight away. More on this in Sloes and elderberries after the first frost.
Elderberry and quince: juice first, then liqueur
Elderberries never go into the alcohol raw, not even from the freezer. The reason is called sambunigrin. It sits mainly in the seeds, stalks, leaves and unripe berries and upsets the stomach: nausea, vomiting, diarrhoea. It only becomes harmless above 80 °C. Use only black elder, a shrub with drooping clusters, never dwarf elder with upright fruit heads and never red-berried elder. Strip the berries completely from the stalks, pick out the green and red ones, crush them in a stainless-steel pan and heat them while stirring until the thermometer reads about 85 °C throughout. Hold that for a few minutes. Elderberries yield about half their weight as juice; for a litre of liqueur a kilo of clusters is usually enough. Only the berries are heated, never the finished liqueur: alcohol boils at just 78 °C, and its vapours catch fire easily.
Quince is rock-hard and full of pectin, and the pectin is the reason for the juice route. In juice it stays quietly dissolved; only the alcohol makes it set, and in the bottle the liqueur turns into jelly. After the fact, no enzyme helps reliably any more. So rub off the fuzz, wash the quinces, grate them down to the core and stir in a pectic enzyme as directed on the pack; for small quantities there is also a 10 ml bottle. Leave covered overnight and press through a dense cloth the next day. After harvest, quinces should wait no more than two to three weeks, otherwise they lose their fragrance. Elderberries get the enzyme too, but only once the mash has cooled below 50 °C, because heat destroys it; press after four to six hours. Blackcurrants are also rich in pectin and belong on the same route. More on quince in Making quince wine.
Always blend in this order: first the sugar into the juice, then the alcohol. For one litre at 20 % vol, dissolve 250 g of sugar in part of the juice, no warmer than lukewarm, let it cool, stir in the spirit and top up with juice exactly to the litre mark. The amount of spirit is target strength × final volume : strength of the spirit:
| 1 litre, 20 % vol, 250 g sugar | Spirit | Juice to the mark, approx. |
|---|---|---|
| Korn, 32 % vol | 625 ml | 225 ml |
| Vodka, 37.5 % vol | 533 ml | 320 ml |
| Vodka or Korn, 40 % vol | 500 ml | 350 ml |
| Rum, 54 % vol | 370 ml | 480 ml |
It should not be less than 200 ml of juice per litre; the liqueur only becomes properly fruity with 400 to 500 ml. With Korn there is just enough room left for the minimum; the stronger the spirit, the more fruit fits in. Always top up to the mark, because alcohol and water contract when mixed.
The calendar to Christmas
A freshly blended liqueur still burns on the tongue. With every week of rest the flavours round off, and over the months alcohol and fruit acids slowly react to form esters that make it smoother. The plan:
- Now until early October: start the berry infusion; turn elderberries into juice while the clusters are still hanging, and blend them into liqueur straight away.
- By mid-October: turn the quinces into juice and blend.
- End of October to early November: press the berry infusion four weeks after starting it, sweeten further and let it rest for a few days.
- By mid-November: berry, elderberry and quince liqueur filtered and in bottles. That leaves a good five weeks to mature.
- November, after the first frost: start the sloes, press after three to five days and bottle.
The sloe has the tightest schedule. If the frost does not come until the end of November, its liqueur will be young at Christmas. It improves into the spring, and you are welcome to add a note saying so for whoever receives it.
Bottling and giving
Once the sediment has settled after a few days, carefully pour off the clear part and pass it through a straining cloth or a synthetic-fibre filter bag. Leave a few centimetres of air under the closure, more than with wine, because high-alcohol contents expand more in warmth and can burst a brim-full bottle with a crown cap or screw cap. Close used wine bottles with cork stoppers. Store cool and dark, not in the attic.
The label should show the fruit, the date and the calculated strength, for example “around 20 % vol”. The figure is not decoration: sweet liqueur tastes milder than it is and has roughly twice as much alcohol as wine. It is a gift for adults and belongs out of the reach of children. “Himbeergeist” or “raspberry spirit” does not belong on the label, because such names are reserved for distillates, and your infusion is not one. For the bottle neck there are neck labels with vine leaves.
Giving it away incurs no further alcohol duty; that is already included in the price of the spirit. Selling is another matter: then the production has to be registered with the main customs office beforehand, and a laboratory determines the strength, because in trade the figure on the label may deviate by only 0.3 % vol. The calculated figure is only good enough for a gift. Wine, mead and sparkling wine step by step are in the Maischewerk booklets, and handling additives is covered in Working safely in the cellar.
Safety note: The pectic enzyme is a hazardous substance; it can irritate skin, eyes and airways and cause allergies if inhaled. The signal word, pictogram and hazard (H) and precautionary (P) statements are on the product page and the pack; the label of the product delivered is what counts. Drinking alcohol is flammable: never measure it out next to an open flame.
Magnus von Kageneck is the cellar-master character of Maischewerk. The texts in this series are written with the support of artificial intelligence and are checked for technical accuracy before publication.
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