🥃 Infusion
A way to give a spirit flavour, aroma and colour: herbs, spices, fruit, bark or nuts steep in alcohol until their aromatic compounds pass into the liquid.
Infusion is the simplest way to give alcohol flavour. Herbs, spices, fruit, bark, coffee or nuts are covered with spirit and left until aromatic compounds, colour and bitterness pass into the liquid. This is how liqueurs, amari, bitters, flavoured vodkas and homemade spirits are made; in gin, infusion often comes before distillation.
How it works. Ethanol dissolves many substances that do not dissolve in water, and it also preserves them. According to Difford's Guide, heat, motion and pressure speed the process: bottles are shaken, and producers use rotating vessels. The main mistake is steeping too long, which brings in excess bitterness. Tea gives up tannins within minutes, vanilla takes days, hard nuts take weeks.
Infusion and maceration. Both words describe leaving raw material in a liquid. Difford's Guide calls maceration an infusion of crushed material, while the Oxford Companion to Spirits & Cocktails describes it as a longer and more complex process and treats infusion as the quicker method. On labels, producers often use the two terms as synonyms.
In law. EU Regulation 2019/787 mentions maceration in several category descriptions: geist is made by macerating unfermented fruit before distillation, and Berenburg is obtained by macerating fruit and plants. The technical file for Irish Poteen describes macerations and infusions with local herbs, berries and fruit as a traditional feature of that drink.
Why this matters to you. Berries, herbs or honey do not make a liqueur light: the alcohol in it is the same, and sweetness can hide its strength. For home experiments, use only food-grade spirit and clean ingredients. The WHO reminds us that there is no safe level of alcohol consumption.
Facts
| Raw material | herbs, spices, roots, bark, fruit, berries, nuts, coffee; solvent: spirit, water or glycerine |
|---|---|
| Legal basis | Regulation (EU) 2019/787, Annex I: maceration in the descriptions of categories 20 (geist) and 43 (Berenburg) |
How it connects to Spirits
🥃 Infusion → kind of → ⚗️ How spirits are made → kind of → 🥃 Spirits
Links
- Next step
- 🍸 Flavoured vodka, 🍸 Gin, 🥃 Sloe gin, 🥃 Limoncello, 🥃 Nocino, 🥃 Amaro, 🥃 Cocktail bitters, 🥃 Coffee liqueur
- What it yields
- 🍷 Ethanol
- Protects from
- 🍷 Alcohol and health
- Part of
- ⚗️ How spirits are made
- Similar and different
- 🍷 Maceration
Frequently asked questions
Is a herbal infusion healthier than plain spirit?
No. Herbs add flavour and colour, but the alcohol acts on the body in the same way. The WHO stresses that there is no safe level of alcohol consumption.
How does infusion differ from maceration?
According to Difford's Guide, in maceration the raw material is crushed first; the Oxford Companion describes maceration as the longer process. Producers often use both words as synonyms.
How long does infusion take?
It depends on the ingredient: tea takes minutes, vanilla days, hard nuts weeks. Over-steeping gives excess bitterness.
Which drinks are made by infusion?
Liqueurs, amari, cocktail bitters, flavoured vodkas, limoncello, nocino and sloe gin; in gin, infusion often comes before distillation.
How can infusion be sped up?
With heat, motion and pressure: bottles are shaken, industrial producers use rotating vessels, and bartenders use nitrous oxide siphons.
What to read next
- 🍷 Alcohol and health — Alcohol in any drink is harmful in large amounts, and the risks grow with the quantity.
- 🍸 Gin — A spirit flavoured with juniper berries: in the EU at least 37.5% vol., juniper must dominate, and “dry” means up to 0.1 g/l of sugar.
- 🥃 Amaro — Italian bittersweet drink made from herbs, roots, bark and citrus peel; there is no legal definition, and strength runs from about 16 to over 40% ABV.
- 🥃 Nocino — Liqueur from green walnuts: in the EU at least 30% vol. and 100 g/l of sugar; "Nocino di Modena" is 38-43% with 250 g of walnuts per litre.
- 🥃 Limoncello — Italian liqueur from lemon zest steeped in alcohol; the Amalfi GI requires 25% vol. minimum and at least 250 g of lemons per litre.
Similar
Sources
- Difford's Guide: Infusion and maceration — how spirits get flavour (soaking herbs, spices, nuts or fruit in alcohol; maceration with cut botanicals; heat, motion and pressure speed extraction; over-extraction; tea ~5 min, vanilla days, hard nuts weeks)
- Oxford Companion to Spirits & Cocktails (spiritsanddistilling.com): infusion — extraction of flavour with water, ethanol or glycerin; usually quicker than maceration; gin botanicals infused before distillation; natural colours; rapid nitrous infusion
- Regulation (EU) 2019/787 on spirit drinks (OJ L 130, 17.5.2019), Annex I: cat. 20 Geist (maceration of unfermented fruit, then distillation), cat. 31 flavoured vodka, cat. 33 liqueur, cat. 43 Berenburg (maceration of fruits or plants)
- Technical file setting out the specifications with which Irish Poteen/Irish Poitín must comply (Department of Agriculture, Food and the Marine; registered by the European Commission 27.03.2019): raw materials cereals, potatoes, whey, sugar beet molasses; distilled ≤ 94.7 % vol.; min. 40 % vol.; illicit 1661–1997; macerations and infusions; casks ≤ 10 weeks
- WHO/Europe: No level of alcohol consumption is safe for our health (04.01.2023)