<P> The teaspoon is first mentioned in an advertisement in an 1686 edition of the London Gazette . </P> <P> In some countries, a teaspoon (occasionally "teaspoonful") is a unit of volume, especially widely used in cooking recipes and pharmaceutic prescriptions . In English it is abbreviated as tsp. or, less often, as t., ts., or tspn . The abbreviation is never capitalized because a capital letter is customarily reserved for the larger tablespoon ("Tbsp .", "T .", "Tbls .", or "Tb ."). In German and Dutch teaspoon is abbreviated TL, for Teelöffel and Theelepel respectively . </P> <Dl> <Dd> See also Apothecaries' system . </Dd> </Dl> <Dd> See also Apothecaries' system . </Dd>

How many grams of ice cream in a teaspoon