Typically you should use between 2 - 8 grams per serving. For many Chinese teas 5 grams is an ideal amount. 2 - 4 grams is sufficient for many Indian teas.
Each tea varies in size and weight, so it is difficult to find an accurate rule to follow.
For measuring out black teas, the traditional tea spoon is still an excellent way to measure out your tea.
On the whole, one tea spoon is sufficient for one cup; if you are making a large pot of tea, then "one spoonful per person and one for the pot" is a good rule of thumb.
A method for measuring out full leaf green teas, though not the most accurate, is to take a pinch, i.e. what you can pick up with a finger and thumb, from the bag. One to two pinches per glass/per person tends to suit many.
As you become more familiar with the teas, you can find your own own optimum quantity for your teapot or preferred brewing vessel.
It is important to remember leaf size has a significant impact on strength. Small leaf teas or smaller-sized tea grades, such as fannings and dust, will infuse much quicker.
The teas in our range are all whole leaf, and we have provided a Tea Brewing Guide to help you measure the quantity required.