The suit follows a Bloomberg News investigation that asked an independent laboratory to test store-bought Parmesan cheese for wood-pulp content.
The tests found Essential Everyday 100% Grated Parmesan Cheese, from Jewel-Osco, contained 8.8 percent cellulose, while Wal-Mart’s brand registered 7.8 percent. Whole Foods 365 brand didn’t list cellulose as an ingredient on the label, but still tested at 0.3 percent. Kraft Heinz Co.’s Parmesan had 3.8 percent of the filler.
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