How much is a quarter tea spoon of herbs?

A quarter teaspoon of herbs is approximately 0.625 ml or 1/16 of a tablespoon.

However, it's important to note that:

* Herb density varies: Some herbs are fluffy and airy, while others are denser. This means that a quarter teaspoon of one herb might have a different weight or volume than a quarter teaspoon of another herb.

* Recipes can be different: Some recipes may call for "packed" teaspoons, which means the herb is tightly packed into the measuring spoon. This will result in a slightly higher volume of herbs compared to a loose, unpacked teaspoon.

Therefore, it's always best to refer to the specific recipe instructions and their guidance on how to measure herbs.