Hanging above the doorway of this Fujianese "99 cents and up" store are a number of posters offering nutritional guidance. One, illustrated with postage-stamp-sized photos, outlines the merits of 40-some fruits and vegetables. Another, shown here in detail, employs a variation on the international "no" sign to warn against possibly dangerous food pairings.
In the example at hand, combining the two ingredients "can lead to poisoning, in severe cases, fatal" (my loose translation). If you secure a particularly nice bunch of enokitake from the farmers market, the poster implies, that would not be the time to scour the local butcher shops for fresh donkey meat.
Fu Jun Hao
217 Madison St. (Rutgers-Jefferson Sts.), Manhattan