Penicillium glaucum is a mold that is used in the making of some types of blue cheese, including Bleu de Gex, Rochebaron, and some varieties of Bleu d'Auvergne and Gorgonzola. (Other blue cheeses, including Bleu de Bresse, Bleu du Vercors-Sassenage, , Cambozola, Cashel Blue, Danish blue, Fourme d'Ambert, Fourme de Montbrison, Lanark Blue, Roquefort, Shropshire Blue, and Stilton use Penicillium roqueforti.) P. glaucum was found by Pasteur to feed on only one enantiomer of tartaric acid, L-(+)-tartaric acid, which makes its use the earliest example of kinetic resolution.