The Science

Specs for Nerds

A quick, visual look under the hood — the curious-minded version. Every bottle of our original cocktail foamer is hand-batched in small runs; the full chemistry lives in Field Notes.

Filtered Until It Tastes Like Nothing

Activated charcoal adsorbs the phenolics and bitterness from the botanical extract — without stripping the saponins that build the foam. What passes through carries no flavour of its own.

Raw botanical extract
Activated-charcoal filtration
Clean, neutral foam

Every bottle is hand-batched in small runs in California — measured, filtered, and obsessively tested by one maker. No factory line, no shortcuts. Just a formula refined over hundreds of iterations, made the same careful way each time.

The Spec Sheet

Measured to the same numbers, batch after batch.

Bubble diameter
< 50 µm
Foam height
4–8 mm
Stability
1 hr+
pH
4.1
ABV
40%

How the Foam Holds

No eggs, no aquafaba, no synthetic emulsifiers — just plant chemistry.

Saponins + hydrocolloidsPlant-derived surfactants and stabilizing gums.
Lower surface tensionSurfactants let micro-bubbles nucleate under shear.
Rigid lamella resists drainageA stiff interfacial film slows drainage and Ostwald ripening.

Built for the Bar

  • Shelf-stable at room temp
  • Up to 200 cocktails / bottle
  • Neutral flavor & aroma

This isn't a commodity foamer. It's one person's obsession — batched by hand, checked bottle by bottle, and held to the numbers above.

Ready to Build a Better Drink?

One bottle crowns up to two hundred cocktails with a clean, flavourless foam. Made by hand, for people who care how it's made.

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