Cocktails on Tap: A Guide to Draught Cocktails at Home

Cocktails on tap are pre-mixed, often pre-diluted and sometimes carbonated cocktails stored in kegs and served from a dispensing system, similar to draught beer. They bring bar-quality consistency and convenience to home entertaining.

What Does "Cocktails on Tap" Mean?

The phrase cocktails on tap meaning refers to batch-made cocktails stored under pressure and poured through a tap, rather than mixed individually. This method, also called draught cocktails or kegged cocktails, allows you to prepare large quantities in advance, ensuring every guest gets the same well-balanced drink.

Why Serve Cocktails on Tap at Home?

Home dispensing systems for cocktails are becoming more accessible. Benefits include:

• Consistency: Every pour is identical, eliminating over- or under-pouring.
• Convenience: Batch once and serve many guests without shaking each drink.
• Customisation: Adjust strength, sweetness, and flavour to your taste.
• Waste reduction: Use full bottles and avoid half-empty mixers.

Essential Equipment for Cocktails on Tap

To serve cocktails on tap at home, you need:

• Keg: Stainless steel or food-grade plastic, typically 5–19 litres. Cornelius (Corny) kegs are popular for home use.
• Gas source: Food-grade CO₂ or nitrogen (or a blend) to pressurise and push the liquid.
• Regulator and lines: To control pressure and deliver the cocktail.
• Tap or faucet: A picnic tap or a mounted draft faucet.
• Refrigeration: A kegerator or converted fridge to keep the keg cold (usually 2–4°C).

Regular tap maintenance—cleaning lines and faucets—is essential for hygiene and flavour.

How to Make Cocktails on Tap at Home

Follow these steps for successful batching:

1. Choose a recipe: Pick cocktails that work well in large volumes, such as Negronis, Margaritas, or Old Fashioneds.
2. Scale up: Multiply ingredients to your keg size, but reduce dilution: since you'll add water during chilling and carbonation, use about 15–20% less water than you would for a shaken drink.
3. Mix and filter: Combine all ingredients in a large container. If using fresh juices, strain through a fine mesh to remove pulp.
4. Chill and carbonate (optional): Place the keg in the refrigerator. If carbonating, connect CO₂ at 30–40 PSI and shake or leave for 24–48 hours. For still cocktails, use nitrogen or very low CO₂ pressure to push.
5. Serve: Reduce pressure to 8–12 PSI for pouring. Adjust line length to avoid foaming (about 5–7 feet of 3/16" line works well).

Popular Cocktails on Tap Recipes

These classic recipes scale well. Quantities are for a 5-litre keg (about 17 servings of 300 ml each, including dilution).

Batched Negroni

• 1.25 L gin
• 1.25 L sweet vermouth
• 1.25 L Campari
• 1.25 L filtered water

Mix, chill, and carbonate lightly (or serve still with nitrogen). Serve over ice with an orange twist.

Margarita on Tap

• 1.5 L blanco tequila
• 750 ml triple sec (e.g., Cointreau)
• 750 ml fresh lime juice (strained)
• 500 ml agave syrup (1:1 with water)
• 1.5 L filtered water

Mix, chill, and serve still or lightly carbonated. Rim glasses with salt before pouring.

Old Fashioned on Tap

• 2 L bourbon or rye
• 250 ml simple syrup (2:1 sugar to water)
• 50 ml Angostura bitters
• 2.7 L filtered water

Mix, chill, serve still. Express an orange peel over each glass.

Carbonation and Refrigeration Tips

Proper carbonation enhances mouthfeel but not all cocktails benefit. Light carbonation (2–2.5 volumes of CO₂) suits citrus and spritz-style drinks; strong, spirit-forward cocktails are often better still. Keep the keg at a stable refrigeration temperature (2–4°C) to maintain carbonation and freshness.

Serving and Food Pairings

Serve draught cocktails in chilled glassware—rocks glasses for stirred drinks, coupes for shaken ones. Pair with:

Alcohol-Free Alternatives on Tap

Many mocktails work well kegged. Replace spirits with non-alcoholic alternatives or botanicals. Try:

• Virgin Mojito: Lime, mint syrup, soda water (carbonated).
• Ginger-Lime Fizz: Ginger syrup, lime, sparkling water, optional non-alcoholic bitters.
• Hibiscus Cooler: Hibiscus tea, lemon, honey, still or sparkling.

Adjust sweetness and dilution to taste.

Common Pitfalls and How to Avoid Them

• Foaming: Ensure the keg is cold enough and lines are long enough; release excess pressure if needed.
• Flat drinks: Check for gas leaks and maintain proper pressure.
• Off-flavours: Clean lines regularly with beer line cleaner and rinse thoroughly.
• Over-dilution: Account for melting ice if serving over ice, or use less added water.

With the right setup and a little practice, cocktails on tap can transform your next gathering into a memorable event.