Post brand Great Grains Protein Blend – Honey, Oats & Seeds cereal is being recalled because of possible listeria contamination of sunflower kernels supplied by SunOpta Inc. The Post recall is one of dozens related to sunflower kernels and seeds supplied by the Toronto-based SunOpta, which began recalling products May 4 because of Listeria monocytogenes. The Post recall on the Food and Drug Administration website is dated June 3, but it was not distributed until June 10. Post Consumer Brands, Lakeville, MN, is recalling only one variety of cereal. No other Post products are implicated. The recalled Great Grains Protein Blend – Honey, Oats & Seeds cereal was distributed nationwide. Only certain “Best when used by” dates are included in the recall