Cube-Cola Open Source Recipe
La receta en español.

Open source recipe published under the GNU GPL. Last update 30 December 2012


Please note, 1 batch of this recipe will produce approximately 90L cola. You may want to divide all quantites by 1/2 if you do not want to become a small cola-producing factory. Scaling up the recipe (x2 or more) tends not to work due to the mechanics involved - if you double the measure of the emulsion you have to double your force. With a standard hammer drill this is no small act.

(Acacia Arabica gum arabic)



Orange oil, lime oil, lemon oil, cassia oil. nutmeg oil, coriander oil, lavender oil, gum arabic, caramel colour, citric acid, caffeine, water, GNU GPL.

THE RECIPE STEP 1: 7x Formula

Using food-grade essential oils only, assemble 7.50 ml orange oil 7.00 ml lime oil 2.00 ml lemon oil 0.75 ml cassia oil 1.50 ml nutmeg oil 0.50 ml coriander oil (12 drops) 0.50 ml lavender oil (12 drops) 0.50 ml neroli oil (optional due to high expense of neroli). Using a measuring syringe, measure out the oils into a glass or ceramic container.

Then dissolve 20.0 g instant gum arabic (equivalent to 44ml) in 40 ml water (tap water or non-mineral bottled water, it should have low calcium and low magnesium). Mix the gum well in the water until there are no lumps.


Place the gum/water mix in a high-sided glass container, pyrex or laboratory glass are good if you can get it. Using a high-power corded drill with kitchen whisk attachment, whisk the gum mixture at high speed while your colleague adds the oils-mix from the measuring syringe in a steady stream of drops. 


Continue to whisk at high speed for several minutes, or until oils and water emulsify. This is a state of reaction you will come to recognise in time. The resulting mixture will be cloudy. Test for emulsification by stirring a few drops of the mixture into 1 glass of water: no oils should be visible on the surface. You now have a successful flavour emulsion, which should hold for a minimum of 3 years.


TOTAL FLAVOUR EMULSION MEASUREMENT: 65ml If emulsification is successful, continue to:

STEP 2: Concentrate

For easy mailout and long-distance production into cola syrup with the local addition of sugar and water. To your 65ml emulsion, add 195 ml double strength caramel colouring (we use DD Williamson Caramel Colour number 050 which is commerically manufactured for cola production). Using a metric measuring spoon, measure out 65 ml citric acid  into a large mortar and pestle, then add 18 ml caffeine powder, passing this first through a fine metal sieve to break up any lumps.

Add 100 ml water and mix very thoroughly until the mixture is clear, this could take 5-10 minutes depending on your equipment - the larger the mortar, the faster the citric/caffeine mixture will dissolve. Be sure to do this step in the right order: if you try to dissolve the caffeine on its own you ca nend up with a mysterious solid foam. Pass the citric-caffeine solution through fine muslin fabric (we use a jelly bag) to remove any grains, then add this  to the caramel/flavour emulsion. This is your cola concentrate, total measurement 365ml, which is equivalent to around 90L eventual cola.


To subdivide the concentrate into manageable quantities, please consult the following table.

concentrate size LG SM MINI
concentrate volume 56ml 28ml 14ml
makes up 14L 7L 3.5L


Step 3: The Cola Syrup

For a standard sugar-based cola, use 750ml water, 1.5KG sugar (refined white sugar unless you want a cloudy cola drink) and 56ml Cube-Cola concentrate. Make a sugar syrup by dissolving the sugar in the water over low heat. 750ml is the minimum amount of water that physics will allow you to dissolve 1.5KG sugar into, so be patient. When the sugar syrup has cooled to room temperature, add the 56ml cola concentrate. You now have approximately 1.75L Cube-Cola syrup for an eventual 14L Cube-Cola. As sugar is a preservative this will store for a long period perhaps years without  any noticeable deterioration.

Step 4: The Cola

As required, make up your cola as a 7:1 mix, 7 parts fizzy water to 1 part cola syrup. We currently use 250 ml syrup in a 2L bottle of supermarket own brand sparkling table water. The sparkling water should have low mineral quantities, particularly sodium, so avoid mineral and soda waters where possible.