Some $545 million in cold cash has gotten St. Louis-based Ralcorp into the cold dough business. Ralcorp is buying Sara Lee’s refrigerated dough unit. The unit makes pizza, pie crusts, toaster pastries, crescent roles, and biscuits. The unit had sales of $300 million last year. Ralcorp makes a lot of private-label foods that are sold under generic names or store names.
