The unit system used in every professional cocktail recipe
1 cl
= 10 ml The basic unit
1 dash
~0.6 ml ~6–8 drops from a dash bottle
1 barspoon
~5 ml ½ cl. Used for small additions.
1 jigger
Double-sided: typically 3 cl / 4.5 cl (EU) or 1 oz / 1.5 oz (USA)
1 oz
≈ 3 cl (29.6 ml) Common in US recipes
Top up
Fill the glass to near the rim with the specified mixer
Methods:Shake (with ice in shaker — chills, dilutes, aerates — for citrus/juice cocktails). Stir (with ice in mixing glass — chills, dilutes without aeration — for spirit-only cocktails like Martini/Negroni). Build (pour directly into serving glass over ice). Muddle (crush ingredients in glass). Strain (pour through strainer to remove ice/solids). Double strain (also through fine mesh to remove ice chips).
Standard drink / unit calculator
One UK unit = 10 ml (8 g) of pure alcohol. One US standard drink ≈ 14 g (17.7 ml) of pure alcohol. Use this to check how many units are in any drink.
Volume (ml)
ABV (%)
Part B · spirits — click to explore each family
How distillation works — the universal principle behind all spirits
Every spirit starts as a fermented liquid (beer, wine, wash). Distillation exploits the fact that alcohol boils at 78.4°C, lower than water's 100°C. The vapour — richer in alcohol — is captured and condensed. The result is a concentrated liquid. Repeat distillation increases strength and removes impurities ("pot still" doubles, "column still" can reach near-pure alcohol).
Column stills (continuous distillation) used for vodka, grain whisky, and rum run continuously and can produce spirit close to 96% ABV. Pot stills are batch-operated and produce lower-strength, more flavourful spirit. Most premium whisky and cognac use pot stills.
Part C · beer — fermentation is everything
The one difference that divides all beer
Ales use top-fermenting yeast at warm temperatures (15–24°C) — faster, fruitier, more complex. Lagers use bottom-fermenting yeast at cold temperatures (7–13°C) — slower, cleaner, crisper. This single difference explains why Guinness and Pilsner taste completely different despite using similar ingredients.
Pale ale / IPA (Ale family)
Hoppy, bitter, aromatic. IPA (India Pale Ale) has intensified hop character. Alcohol: 4–7.5%. Popular brands: Sierra Nevada Pale Ale, Punk IPA (BrewDog), Goose Island IPA.
Crisp, clean, light golden. The dominant global beer style. Alcohol: 4–5.5%. Brands: Pilsner Urquell (the original, 1842), Heineken, Peroni, Stella Artois, Corona.
Wheat beer / Weizen (Ale family)
Cloudy, banana and clove notes (from yeast esters and phenols, not actual fruit). Hefeweizen (with yeast) vs Kristallweizen (filtered clear). Alcohol: 4–5.5%. Iconic: Paulaner, Erdinger, Weihenstephaner.
Belgian ale (Ale family)
Fruity, spicy, complex. Trappist ales (brewed by monks — Chimay, Westmalle, Westvleteren) and abbey styles. Dubbel (dark, 6–7%), Tripel (golden, 8–10%), Quad (strongest, 10–12%). ABV can reach 12%+.
Sour / Lambic (Ale — wild fermentation)
Uses wild ambient yeast and bacteria (Brettanomyces, Lactobacillus, Pediococcus). Tart, funky, acidic — very different from conventional beer. Belgian Gueuze and Kriek (cherry lambic). Alcohol: 5–7%.
Reading beer labels: IBU and SRM
IBU (International Bitterness Units)
0100+
0–10: very low (wheat beers). 10–30: balanced (lagers, pale ales). 40–60: noticeably bitter (IPA). 60–100+: intensely bitter (double/imperial IPA). Human bitterness perception peaks around 100 IBU — anything higher is theoretically bitter but not perceptibly more so.
SRM (Standard Reference Method) — colour
2–3: pale straw (Pilsner, Wit). 4–8: golden (Pale Ale, Helles). 10–17: amber/copper (Märzen, ESB). 20–30: dark brown (Porter, Dubbel). 35–40+: black (Stout, Schwarzbier). Colour comes from malts: pale malt gives light colour; roasted/chocolate malt gives dark.
Part D · 10 cocktails you'll find at any serious bar
The cocktail flavour map — most classics fall into these five families
Understanding these families lets you navigate any cocktail menu — and know what to order when you don't know what to order.
Part E · the coffee menu decoded
Everything starts with espresso
A single espresso is approximately 3 cl (30 ml) of concentrated coffee extracted under ~9 bar of pressure through ~7–9 g of finely ground coffee in ~25–30 seconds. All other coffee drinks are built from this base by adding water, milk, or both.
Espresso ratio:
EspressoSteamed milkMilk foamHot water
Ristretto
2 cl (20 ml). Ultra-concentrated. Less water through the same coffee — sweeter, more intense, less bitter. The "short" espresso.
Espresso
3 cl (30 ml). The foundation. Single shot. Rich crema on top. Drunk without milk in Italy, usually standing at the bar.
Lungo
5–6 cl. More water through same coffee. Longer, more bitter, less concentrated than espresso.
Americano
Espresso + ~12 cl hot water added after. Similar strength to drip coffee. "Black Americano" = no milk.
Flat white
Double espresso (6 cl) + ~10 cl microfoam milk. Stronger coffee ratio than a latte. Australian/NZ origin.
Cappuccino
1/3 espresso + 1/3 steamed milk + 1/3 thick foam. The foam is substantial. Traditionally not drunk after 11am in Italy.
Latte
Single/double espresso + 15–20 cl steamed milk + thin layer of microfoam. Milkiest espresso drink. The "coffee" taste is most diluted.
Macchiato
Espresso "stained" with a splash of milk foam. ~3.5 cl total. Preserves coffee intensity with just a hint of milk to cut bitterness.
Cortado
Equal parts espresso and warm milk (~3 cl + 3 cl). Spanish origin. Balances the coffee without diluting it. Between macchiato and flat white.
Cold brew
Coffee steeped in cold water for 12–24 hours. No heat = less acidic, sweeter, higher caffeine. Not the same as iced coffee (hot brewed then chilled).
Part F · wine — from vine to glass
How wine is made — the fundamentals
Wine is fermented grape juice. Unlike beer, no cooking or added enzymes are needed — grapes contain both fermentable sugars and wild yeasts on their skins. The basic process is universal; the variables (grape variety, terroir, fermentation style, ageing) determine everything.
Red wine
Red/black grapes fermented with skins left in. The skins give colour, tannins, and many flavour compounds. Tannins give the dry, grippy mouthfeel. Serve at 16–18°C. Age-worthy reds can improve for decades.
White wine
White/green grapes (or red grapes pressed quickly, no skin contact). Little to no tannin. Freshness, acidity, and fruit are the main dimensions. Serve at 8–12°C. Most whites are best young; exceptions include aged Burgundy and Riesling.
Rosé wine
Red grapes with very brief skin contact (hours, not days) — just enough to give colour. Not a mix of red and white (except in Champagne, where blending is permitted). Serve at 8–10°C. Provence rosé sets the style benchmark.
Sparkling wine
CO₂ added via secondary fermentation (Champagne method: in bottle; Charmat method: in tank = Prosecco, Cava). Champagne method produces finer, more persistent bubbles. The pressure inside a Champagne bottle is ~6 atm — equivalent to a car tyre.
Fortified wine
Neutral spirit added during or after fermentation, raising ABV to 15–22%. Port (added during — retains sweetness), Sherry (added after — dry or sweetened later), Madeira, Marsala, Vermouth (aromatised fortified wine). Shelf-stable opened longer than table wine.
Orange / Skin-contact wine
White wine made like red — with extended skin contact. Result: amber/orange colour, significant tannins, oxidative notes, complexity. Ancient Georgian and Slovenian tradition, now a global natural wine movement. Polarising: some find them profound, others difficult.
Oak ageing: New French oak barrels impart vanilla, spice, toast, and coconut notes to wine. The smaller the barrel (standard 225 L Bordeaux barrique), the more oak influence per litre. Stainless steel or concrete tanks preserve fruit and freshness with no oak character — preferred for aromatic whites like Sauvignon Blanc. "Oaked" Chardonnay (Burgundy white, California) vs "unoaked" Chardonnay (Chablis) are almost unrecognisable as the same grape. Decanting: Pours older red wines off sediment; also aerates young tannic reds to soften them.
Major wine regions of the world — the "wine belt"
Wine grapes grow in a band roughly 30–50° latitude in both hemispheres — warm enough for ripening, cool enough for acidity. Within this belt, soil, altitude, ocean proximity, and mesoclimate create "terroir."
Grape variety profiles — click to explore
These 17 grapes account for the overwhelming majority of wine you'll encounter. Each has a characteristic flavour profile, typical regions, and serving temperature.
Reading a wine label — Old World vs New World logic
Old World label (France / Italy / Spain)
Region / Appellation is front and centre — "Châteauneuf-du-Pape", "Barolo", "Rioja Reserva". The grape variety is often not stated — you must know that Barolo = Nebbiolo, Chablis = Chardonnay, Sancerre = Sauvignon Blanc. This is the Old World philosophy: place expresses itself through the grape, not the reverse. Vintage matters greatly for age-worthy wines. Classification matters in Bordeaux (Premier Cru, Grand Cru) and Burgundy.
New World label (USA / Australia / Chile)
Grape variety leads — "California Cabernet Sauvignon", "Marlborough Sauvignon Blanc". The producer's brand is paramount. Region (AVA in USA, GI in Australia) provides context but is secondary. To use a single variety name in the USA, wine must contain at least 85% of that grape. New World wines are generally more fruit-forward and approachable young, less reliant on food pairing.
Sweetness levels (wine): Dry (fermented to near-zero residual sugar — most table wine). Off-dry (just a hint of sweetness — many Rieslings, Gewürztraminer). Medium (noticeable sweetness — Vouvray demi-sec). Sweet (Sauternes, Tokaji, ice wine — intentionally sweet dessert wines). The alcohol level is a rough sweetness proxy: under 12.5% ABV often means some residual sugar; over 14.5% usually means fully dry and warm-climate.
Wine and food — the principles behind the rules
Part G · serving temperatures — the one rule everyone ignores
"Room temperature" for red wine originated when European rooms were 16–18°C, not the 22°C+ of a modern heated interior. Serving most red wines too warm makes alcohol more prominent and fruit flabby. Serving white wines too cold numbs aromatics. A few minutes in the fridge, or a minute in a cooler, can transform a wine.
Part H · test yourself
1. A cocktail recipe calls for "4.5 cl of gin, 1.5 cl of dry vermouth, 1 dash of orange bitters." You have a 3 cl / 4.5 cl jigger. How do you measure this?
Gin (4.5 cl): use the large side of the jigger once, filled to the top. Dry vermouth (1.5 cl): use the small side of the jigger (3 cl) filled only to the halfway mark. Bitters (1 dash): tip the bottle quickly once — you'll get approximately 0.6 ml. This is essentially a dry Martini — gin forward with minimal vermouth. Build in a mixing glass with ice, stir 30–40 times until cold and diluted, then strain into a chilled martini glass. The bitters are optional but add aromatic complexity.
2. What is the difference between Scotch whisky and Bourbon, and why can't Bourbon be made in Scotland?
They are fundamentally different products with legal definitions tied to geography. Bourbon must be made in the USA (though not legally required to be Kentucky — most is, but legally any US state qualifies), from a mash that is at least 51% corn, aged in new charred oak barrels, with no added colouring or flavouring. The new charred oak barrel is the key — it gives Bourbon its vanilla and caramel character. Scotch whisky must be made in Scotland, predominantly from malted barley (though grain whisky uses other cereals), aged in Scotland for at least 3 years in oak casks (often previously used bourbon or sherry casks — not new oak). The used barrel gives Scotch a more subtle, less sweet character. Scotland couldn't make Bourbon even if it wanted to — the product would legally have to be called something else.
3. What makes a Negroni different from a Boulevardier, and what's the rule that governs the Negroni's balance?
A Boulevardier substitutes bourbon (or rye whiskey) for gin in the Negroni formula — same ratios, same sweet vermouth and Campari. It's richer and less herbaceous than a Negroni, with the whiskey warmth replacing gin's juniper bite. The Negroni's governing rule is the 1:1:1 ratio — equal parts gin, sweet vermouth, and Campari (typically 3 cl each). This perfect equilibrium is why the Negroni is considered the ideal "equal parts" cocktail: bitter (Campari), sweet (vermouth), and dry/spirit (gin) in perfect balance. Adjusting ratios changes the character dramatically — more gin = drier and stronger, more Campari = more bitter, more vermouth = sweeter and rounder. The 1:1:1 rule is the starting point from which bartenders calibrate.
4. Someone orders a "cappuccino" at 3pm in Rome. What happens, and why?
They'll be served it, but with a slightly raised eyebrow. In Italian coffee culture, milky coffee drinks (cappuccino, latte) are morning drinks — consumed at breakfast to accompany a cornetto (croissant). The cultural logic: milk is heavy, consumed in the morning; coffee after meals (espresso or macchiato) is taken without much milk to aid digestion. A cappuccino at 3pm marks you as a tourist. An espresso, macchiato, or espresso corretto (espresso with a splash of grappa or sambuca) would be the culturally appropriate choice. The Italian rule: the darker and smaller the coffee, the later in the day it's appropriate. Espresso is fine at any hour; a latte is exclusively breakfast territory.
5. What is the difference between tequila and mezcal, and why does mezcal taste smoky?
Both are made from agave, but all tequila is mezcal — not vice versa. Tequila is a specific mezcal made exclusively from blue agave (Agave tequilana Weber), produced in a defined region of Mexico (primarily Jalisco). Mezcal can be made from any of ~40 agave varieties across multiple Mexican states. The smokiness: mezcal production roasts the agave hearts (piñas) in earthen pits lined with hot rocks, often using wood fire. The smoke penetrates the agave and is carried through distillation. Tequila production typically uses steam ovens (autoclaves) or brick ovens — no smoking. The result: tequila is generally cleaner and more consistent; mezcal is smokier, more complex, more artisanal. The agave variety also contributes flavour: espadín (most common) is lighter, tobalá (rare, wild) is more floral and complex.
6. A wine label says "Barolo DOCG 2018." What do you know about this wine without tasting it?
Quite a lot. Barolo is produced in the Langhe hills of Piedmont, northwest Italy. DOCG (Denominazione di Origine Controllata e Garantita) is Italy's highest wine classification — production rules are strictly enforced. The grape is 100% Nebbiolo — by law, Barolo must be. Nebbiolo gives high tannin, high acidity, and distinctive flavours of tar, roses, dried cherries, and leather when aged. By law, Barolo must be aged a minimum of 38 months total (62 months for Riserva), of which at least 18 months in oak. So the 2018 vintage was bottled no earlier than around 2021–2022. The 2018 vintage in Barolo was considered excellent to outstanding. You'd expect a tannic, structured wine that may still benefit from further cellaring — or at minimum, decanting for 1–2 hours before drinking. This is not a casual Tuesday wine; serve it at 16–18°C with braised meat, risotto, or aged cheese.
7. Why does Champagne taste different from Prosecco even though both are sparkling white wines?
Three main reasons. First, grapes: Champagne uses Chardonnay, Pinot Noir, and Pinot Meunier; Prosecco uses Glera. Different flavour profiles entirely. Second, production method: Champagne undergoes a second fermentation inside each individual bottle (méthode champenoise / méthode traditionnelle), creating finer, more persistent bubbles and adding yeast-derived complexity (brioche, toast, biscuit notes) through extended lees contact. Prosecco's second fermentation happens in large pressurised tanks (Charmat / Martinotti method) — faster, cheaper, and it preserves fresh, fruity, floral character. Third, ageing: Non-vintage Champagne is aged on lees for a minimum of 15 months; Prosecco is typically released within a few months and is best drunk young. The result: Champagne is more complex, toasty, autolytic; Prosecco is fruitier, lighter, more approachable. Cava (Spain) uses the traditional method with local grapes — a closer technical cousin to Champagne than Prosecco is.