I mentioned in this thread that I bought a green tea starter kit from O-Cha.com that included a 100 gram ( 3.5 ounces ) bag of Sakura Sencha.

The directions on the bag called for a Leaf/Water Ratio of 0.6 grams per ounce of water.

Eight ounces is "1 cup", no problem there.

However, Googling around I couldn't find anything about how many grams of tea would be in a teaspoon.

I have a very nice Cuisanart stainless steel electric food scale at home and I have a very nice stainless steel measuring spoon set.

So, I thought I would post my results here for future Googlers with the understanding that different types of tea will have different weights.

On my food scale, with packing my O-Cha.com Sakura Sencha down, a tiny bit and letting it heap in the teaspoon, a little bit I got

1 teaspoon of O-Cha.com Sakura Sencha == 1 gram

So, according to the directions on the bag, if I want 1 cup of tea ( 8 fluid ounces ) I will need 4.8 grams of their Sakura Sencha tea. About 5 teaspoons.

The directions gave steeping times for 1st infusions ( 1 minute ), 2nd infusions ( 0.5 minutes ) and 3rd infusions ( 2.0 minutes ) at 175 F/79C.

So, though 5 teaspoons per cup is a lot for one cup of tea, that 5 teaspoons will let me have 3 cups.