A teaspoon of something?
…a teaspoon is literally a defined measurement of volume tho https://en.wikipedia.org/wiki/Teaspoon
For cooking purposes and dosing of medicine, a teaspoonful is defined as 5 mL (0.18 imp fl oz; 0.17 US fl oz), and standard measuring spoons are used.[3]
Only thing I’ve ever needed to worry about being compressed is brown sugar