Somewhat relevant background on history of food in Chinatowns in different times and places in this BBC radio program, which I recommend.<p><a href="http:&#x2F;&#x2F;www.bbc.co.uk&#x2F;programmes&#x2F;p0380gh0" rel="nofollow">http:&#x2F;&#x2F;www.bbc.co.uk&#x2F;programmes&#x2F;p0380gh0</a>