A slice of pizza gets pricier

Rising wheat prices are pushing up costs for baked goods, and foods from muffins to pizza are getting more expensive.

NEW YORK (CNN) -- Pizzeria owner Joe Vicari shakes his head as he prepares to rip open a 50-pound bag of flour for another batch of dough.

"That's 37-bucks. $37. I couldn't believe it!" says Vicari.

Since opening Mariella Pizza in mid-town Manhattan 30-years ago, Vicari, says he has never experienced such a jump in the cost of his ingredients.

"I can't even believe how much the flour [goes] up. When I see the bill I can't believe it, that's too much," says the veteran pizza maker, who emigrated from Sicily. Only four weeks ago, Vicari says, he was paying just $16-a-bag for Gold Medal brand flour, which at $37-a-bag now seems more golden than ever.