I live near several produce vendors, including a supermarket, small grocers, and a semi-open-air market. The open-air market carries more local produce, but some items are imported to Canada from the U.S. The other stores source their fruit more internationally, but still have a great deal of local fruit.
The fruit from the open-air market seems to go bad much more quickly than fruit from any other store. A box of blueberries will have mold in it a day after I bring it home. Peaches shrivel and develop mold within 3 days. This occurs whether or not I keep the fruit in the refrigerator. Does the market, which is a permanent structure (not a collection of stalls), possibly have more mold circulating? Is this just how fast fruit goes bad on certain supply chains? Could it be that the fruit at the market is older?
Best Answer
Shelf life and taste of fruit are inversely correlated. A few factors off the top of my head are:
Combine that with a segmented market. On the one side, you have the buyers who are not very sensitive to taste, and are sensitive to convenience and price. They buy at supermarkets, and tend to choose their fruit by looks. Then you have farmers who corner the "high-taste" market niche with fruit that is optimized for taste, and they find buyers who are willing to pay more and give up the convenience of shopping at a supermarket in order to get the best taste. These farmers don't have the incentive or resources to optimize for traits that diminish taste, and sometimes are against it because of personal conviction. These farmers tend to sell at open-air markets.
Bottom line, if you value shelf life very highly, the best strategy for you is to buy your fruit from suppliers who optimize for it, in that case the supermarkets.