NEW YORK (AP) — McDonald’s is offering fresh beef rather than frozen patties in some burgers at thousands of restaurants, a switch it first announced about a year ago as it works to appeal to customers who want fresher foods.

The fast-food giant, which has relied on frozen beef patties since the 1970s, said it’s launching Quarter Pounders made with fresh beef in about 3,500 restaurants starting Tuesday.

READ MORE: Steamship Authority Website Running Again After Being Hit With Ransomware Last Week

The Quarter Pounder. (Photo credit: McDonald’s)

It’ll be available in eight cities, including Atlanta, Miami and Salt Lake City, then roll out to most U.S. McDonald’s by May.

READ MORE: Family & Friends Of Fallen Worcester Police Officer Manny Familia Organize Softball Tournament In His Honor

McDonald’s says workers will cook up the fresh beef on a grill when the Quarter Pounder and “Signature Crafted” burgers are ordered.

The change is the latest by the Oak Brook, Illinois-based company to improve its image as more people shun processed foods.

MORE NEWS: Jerry Remy 'Resting Comfortably' At Hospital After 'Experiencing Shortness Of Breath' During Red Sox Telecast Friday

(© Copyright 2018 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)