Chobani, the upstate New York pioneer in the burgeoning Greek yogurt category, issued a swift apology on the company's site following the Sept. 4 Food and Drug Administration probe into reports of mold problems with its product.

chobani"I'm sorry we let you down," said a note from founder Hamdi Ulukaya addressed to fans and customers of the New Berlin-based company.

On Sept. 5, Chobani began a voluntary recall of a limited amount of yogurt that is produced at its Twin Falls, Idaho, plant. The suspected manufacturing line has been shut down. The New York and Australia factories are not impacted by the recall.

Ulukaya's apology notes the type of mold found is common in the daily business, especially the segment that makes all-natural product.

Customers of the affected lot, which accounts for about five percent of total output, can either get a refund or replacement products.

The company vows to work "round the clock" to fix the issue and ship fresh yogurt to stores.

Chobani, according to the CEO and owner, believes "there is nothing we take greater pride in than making a perfect cup of yogurt" and making it "accessible to everyone."