INT-MIX-2-2.2.2

Carbonation, Smoke, Foams, Garnish and Ice

Force-carbonating and bottling a cocktail, the fire and smoke-detector risk of smoking a drink onboard, foams and airs (pasteurised egg or aquafaba), dehydrated garnish and directional-freezing clear ice.

The charter guests have asked for a "wow" moment at the pre-dinner drinks tomorrow. You could smoke the drinks under a cloche — and set off the smoke detector in the main saloon, which brings the officer of the watch, the fire party, and a very short conversation with the captain. Every technique in this lesson is impressive; each one carries a specific hazard or a specific way to fail.

Carbonation and the Bottled Cocktail

Carbonating a cocktail yourself gives sharper, finer bubbles and lets you bottle a signature drink to serve instantly for a crowd.

Method (force carbonation):

  • The liquid must be clear (clarify or filter first) and very cold — ideally 0-4 °C. CO2 dissolves far better in cold liquid.
  • Keep ABV below about 20-25%; alcohol reduces CO2 solubility. Add the dilution water at this stage — you cannot add ice later.
  • Purge the headspace, charge to 2-3 bar (30-40 psi), shake or rock, and rest cold. Repeat the charge two or three times.
  • Rest the bottle cold for several hours before serving; carbonation continues to dissolve.

Use only PET or pressure-rated bottles. Never pressurise a glass bottle not designed for it — that is a fragmentation hazard in a confined space. Secure gas cylinders properly for sea and stow them per the yacht's regulations.

Smoke — The Onboard Fire Risk

Smoking a drink (a smoking gun, a torched chip, a cloche of applewood smoke) is a genuine fire and smoke-detector risk on a vessel. Treat it as a hot-work-adjacent activity:

  • Clear it with the officer of the watch or the bridge before you do it. Detectors in guest areas are sensitive and a false alarm can trigger a full fire response.
  • Ask whether the detector in that space can be isolated, and confirm it is reinstated afterwards.
  • Work near an extraction hood or on deck, keep an extinguisher to hand, never leave a smouldering chip unattended, and quench it fully in water.
  • Do not use a naked flame near high-proof spirit, sanitiser, or an atomiser of alcohol.

Foams, Airs and Garnish

  • Egg white gives the classic silky foam. It must follow the yacht's food-safety system: use pasteurised egg white, or aquafaba (chickpea water) — which is also the vegan and allergen-friendly answer.
  • A dry shake (no ice) builds the protein foam, then a wet shake chills and dilutes it.
  • Airs use a lecithin-based solution whipped with a hand blender at the surface to produce a light, aromatic foam that carries scent rather than texture.
  • Dehydrated garnish — citrus wheels at 55-60 °C for 8-12 hours — is the most useful trick at sea: shelf-stable, weightless, beautiful, and it survives a passage. Store with a desiccant; humidity is the enemy.

Ice

Clear ice comes from directional freezing: an insulated container freezes from the top down, pushing air and impurities into the unfrozen base, which you discard. Clear ice is denser, melts more slowly, and looks like intent rather than accident. Cut it with a serrated knife and an ice pick, on a towel, wearing a cut-resistant glove.

Onboard Notes

  • Never put a glass anywhere near an ice well or ice machine. If glass breaks near ice, the entire ice supply is condemned and the well is emptied, washed and re-filled — no exceptions, no shortcuts.
  • CO2 in an enclosed, poorly ventilated space is an asphyxiation risk. Charge bottles in a ventilated area.
  • Torches, guns, chips and butane are all controlled items on a yacht. Stow them per the safety management system, not in a drawer under the bar.

Practice questions

5 questions
recallcore

recall · core

What are the three conditions a liquid must meet before you force-carbonate it, and why?

recallcore

recall · core

How is clear ice made, and why is it better than ordinary ice?

recallcore

recall · core

What are the options for building a silky foam on a sour, and what does the yacht's food-safety system require?

scenariostretch

scenario · stretch

Charter guests have asked for a "wow" moment and you want to smoke the drinks under a cloche in the main saloon. Set out exactly what you must do first.

scenariostretch

scenario · stretch

A crew member proposes bottling and carbonating your signature drink in glass swing-top bottles for a party. What are your safety concerns?

Independent study. xplor is not an IAMI- or PYA-accredited GUEST training provider. This course covers the ground assessed in GUEST Unit 15; it awards no GUEST unit, certificate or Certificate of Competency and does not count toward one.

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