Big changes, including meltier cheese and more flavorful patties, are coming to McDonald’s burgers nationwide.

In 2023, the fast food chain announced it would be making changes to its classic hamburger, cheeseburger, double cheeseburger, McDouble burger and Big Mac sandwiches. The biggest tweak—grilling six patties at a time instead of eight. With fewer patties on the grill, the auto-cooking mechanism will apply less pressure, and restaurant executives say the new practice will yield bigger, juicer burgers.

“We can do it quick, fast and safe, but it doesn’t necessarily taste great. So, we want to incorporate quality into where we’re at,” Chris Young, McDonald’s senior director of global menu strategy, told The Wall Street Journal last year.

Other changes coming to the sandwiches: buttery brioche buns sliced with a thicker bottom, meltier cheese, and fresher tomatoes and lettuce. And for a minor, yet strange tweak– the sesame seeds on buns will also be spaced further apart, reports Delish.

McDonald’s started rolling out the burger changes last year at its West Coast restaurants, and so far, the public has mixed reception, particularly to the restaurant’s new practice of adding onions to the burger patties while the meat is on the grill.