When measuring materials in the kitchen, ¾ of a teaspoon is equal to ¼ of a tablespoon or approximately 4 milliliters. This is measured by using a ½ teaspoon and a ¼ teaspoon.
Most sets of measuring spoons do not include a ¾ teaspoon option, so combining smaller options is usually easiest. Alternatively, if no ¼ teaspoon option is available, using one full ½ teaspoon and then approximately half of another suffices. Very slight variations of small portions of a teaspoon rarely affect the outcome of a recipe. A tightly packed ¾ teaspoon includes more than a loose ¾ teaspoon.