A Crunchwrap Supreme and a bag of supermarket salad generally appeal to rather different notions of a good lunch. One offers the architectural pleasure of a crunchy tostada tucked inside a warm tortilla; the other, the satisfaction of having arranged to eat vegetables without chopping any. This summer, however, both came with a less welcome consideration: iceberg lettuce.
A massive cyclospora outbreak linked to shredded iceberg from Taylor Farms de Mexico prompted recalls extending from Taco Bell kitchens to supermarket produce aisles. Shoppers began trying to determine which seemingly unrelated groceries shared a supplier; someone even made a barcode-scanning app for precisely this purpose. (Such was the broader atmosphere of suspicion that an entirely unsupported rumor about the Trump administration’s promised bargain beef being horse meat eventually inspired online guides for distinguishing one animal from the other.)