Ingredient: citric acidWhat it is: Additive
A weak organic acid, and it is a natural preservative and is also used to add an acidic, or sour, taste to foods and soft drinks. Citric acid exists in greater than trace amounts in a variety of fruits and vegetables, most notably citrus fruits (esp. lemons and limes).
Ingredient: potassium carbonateWhat it is: Additive
A white salt, soluble in water (insoluble in alcohol), which forms a strongly alkaline solution. It can be made as the product of potassium hydroxide's absorbent reaction with carbon dioxide. Potassium carbonate is sometimes used as a buffering agent in the production of mead or wine.
Ingredient: white sugarWhat it is: Additive
One drachm of citric acid, one scruple of bicarbonate of potash, one ounce of white sugar, powdered. Fill a soda-water bottle nearly full of water, drop in the potash and sugar, and lastly the citric acid. Cork the bottle up immediately, and shake. As soon as the crystals are dissolved, the nectar is fit for use. It may be colored with a small portion of cochineal.