d1 is/are dessertspoon(s) [measuring instrument] containing/holding/enclosing v2, of volume d2 (default 1) dessertspoon(s)/dessertspoonful(s) [volume-unit], standard d3=m1 (default 1=10 mL).
Teaspoon (measuring instrument) doesn't need to have the shape/form of a spoon. See also: teaspoon (measuring unit;=mucyveldekpu). Containment x2 need not be total.