NEW YORK – Billionaire Warren Buffett, the most closely watched investor in America, is putting his money in ketchup, agreeing Thursday to buy H.J. Heinz Co. for $23.3 billion in the richest deal ever in the food industry.

For his money, the Oracle of Omaha gets one of the nation's oldest and most familiar brands, one that's in refrigerators and kitchen cupboards all over the U.S.

The deal is intended to help Heinz accelerate its expansion from a dominant American name into a presence on grocery shelves worldwide. The Pittsburgh-based company also makes baked beans, pickles, vinegar, Classico pasta sauces and Ore-Ida potatoes, as well as a growing stable of sauces suited to regional tastes around the world.