re-freezing green tea? I just bought green tea leaves in China. They were in a deep freezer when I bought them. They were then in my luggage for a few days on my way back home. 

I bought a fair amount of them. Can I now re-freeze at home? Or, like food, is it dangerous to re-freeze green tea leaves?
The concern with food is that if the food spends too much time above the danger temperature (40°F) then bacteria may grow, and if you then freeze it the bacteria will be there waiting to harm the final consumer. However, the USDA says that food thawed in a refrigerator for less than a few days can be safely refrozen.

Assuming these leaves are dry, this doesn't apply here: things won't grow on the tea while it's warm, and freezing won't lock in anything dangerous. So, freeze away.