Measurements
See also: Tincture, Weight to Volume Method
Solvents:
Amounts are always measured by weight, not by volume, as the weight of various solvents is different. When measuring water, weight and volume are closely related. One fluid ounce of water weights about 1 ounce. Sixteen fluid ounces of water (which is 1 pint or 2 cups by volume) wights about 1 pound (16oz by weight). The same applies in metrics. One liter of water weights 1 kilogram, and 100 milliliters of water weights about 100 kilograms. The exact weight of the water depends on its temperature and other factors, but for home preparations these differences are not critical.
Alcohol has the same weight-to-volume relationship as water, but other extraction mediums, such as vinegar, glycerin and oil, do not. These differences are not so critical that you can’t measure the liquids by volume.
| Substance | Weight per Gallon | Weight per Quart | Weight per Pint |
|---|---|---|---|
| Water | 8 Lb. (128 fl.oz. or 16 cups) | 2 Lb. (32 fl.oz. or 4 cups) | 1 Lb. (16 fl. Oz. or 2 cups) |
| Alcohol | 8 Lb. (128 fl.oz. or 16 cups) | 2 Lb. (32 fl.oz. or 4 cups) | 1 Lb. (16 fl. Oz. or 2 cups) |
| Vinegar | 8.4 Lb. | 2.1 Lb. | 1.05 Lb. |
| Glycerin | 10.5 Lb | 2.51 Lb | 1.25 Lb |
| Olive Oil | 7.6 Lb | 1.9 Lb | 0.95 Lb |
Milliliter ↔ Teaspoon (metric) Conversion
1 cup = 248 ml
grams to teaspoons (this will be a rough estimate because different substances weigh different amounts)
a teaspoon of sugar weights 4.2 grams
In general 6 grams will be 1.2 teaspoons
1 gram (that’s a weight) of water equals 1 millilitre (that’s volume) of water.