BBC Online published an insightful overview yesterday of Peru’s booming food industries (“Food business taking off in Peru,” 9/25/09), to coincide with this weekend’s second annual gastronomic fair in Lima.  Dan Collyns reports on the growth of gourmet restaurants, artisanal products and food exports, trends that are helping to prop up Peru’s economy in the face of a global economic downtown. (He also notes Peruvians’ preference for fresh, rather than processed, foods, an idea I’ve been harping on lately in this blog.) Peruvians’ love of good food cuts across class, racial and ethnic barriers, Collyns says, and reflects the country’s rich bio-diversity, from its ocean waters teeming with fish, to the…