There's a nationwide shortage of organic milk.
You might see bare shelves and prices at the grocery store rise as much as 10 percent in the coming weeks.
The New York Times reports it's mostly a case a smaller supply coupled with increased demand.
The cost of organic grain and hay for feeding cows on organic milk has risen sharply, but the price farmers get for their milk has risen steadily. As a result, farmers don't feed their cows as much, leading to lower production of milk--while consumer demand for organic milk continues to grow.
Major grocery chains say they've already experienced shortages, and some have started raising prices.