Jon,I don't know what digestive biscuits are, although I have heard of them. Can you describe them please? I just did an Internet search but I am not really any wiser. What are Graham crackers, because they are said to be similar to digestive biscuits?
Also, in my search I found this site about tea shops in San Diego. The glowing reports of tea drinking might convert even the most convinced coffee drinkers.
http://sandiego.citysearch.com/E/F/SANCA/0000/02/47/
SignOn San Diego: A Time for TeaHelen