Where does the 12x come from? The link mentions 1⁄2 a tablespoon of salt versus 2 tablespoons of sugar, which is a factor 4 in volume. A quick google says the densities only differ by 25% (and in the direction that makes the ratio closer, not further apart), so this is not mass percentage either.
EDIT: Never mind, they mention 1⁄2 a teaspoon of salt. My mistake.
Where does the 12x come from? The link mentions 1⁄2 a tablespoon of salt versus 2 tablespoons of sugar, which is a factor 4 in volume. A quick google says the densities only differ by 25% (and in the direction that makes the ratio closer, not further apart), so this is not mass percentage either.
EDIT: Never mind, they mention 1⁄2 a teaspoon of salt. My mistake.