Square Wednesday announced that it has acquired the OrderAhead pickup business, a mobile service that enables consumers to order takeout food from restaurants.

Square subsequently added the takeout option to its Caviar on-demand food delivery solution. Caviar users in San Francisco, the San Francisco East Bay Area, Los Angeles and Portland now can use the feature. 

"OrderAhead's expertise in improving the restaurant ordering process for busy diners and businesses is a great fit for Caviar and our commitment to helping restaurants grow," Gokul Rajaram, Caviar lead at Square, said in a statement. "This addition will accelerate Caviar pickup and give more food ordering options to diners across the country."