After testing two new Big Macs in Dallas, they've arrived nationwide at McDonald's 

This story has been updated throughout.

McDonald's tested varying sizes of Big Macs in Korea, Japan, Germany, Australia and France. Then they asked if Texans wanted to supersize or downsize their Big Macs.

About 300 Mickey D's in Dallas-Fort Worth and 130 in Columbus, Ohio, sold two new sandwiches in spring 2016: the Grand Mac, which is larger than a Big Mac; and the Mac Jr., a smaller version.

Whether the two macs joined the mac daddy, the Big Mac, on menus all over the U.S. and in Dallas depended on the two-city test.

It worked: As of Jan. 18, 2017, all stores nationwide began selling the Grand Mac and the Mac Jr. on Jan. 18, D-FW stores included.

As a refresher, the Big Mac has -- sing it! -- two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame bun. The Grand Mac, then, is also made with two all-beef patties, each 1/6 pound, with two slices of cheese and a bigger bun. The price in 2016 was $4.89, though stores can choose their own pricing.

The Mac Jr. has just one beef patty -- a "single-layer Big Mac," the company describes in a statement. It generally costs $2.39 to $2.59, according to 2016 figures, though pricing depends on the store.

To celebrate the two new Macs, there's a Big Mac party from noon to 2 p.m. at McDonald's at 11102 N. Central Expressway in Dallas, where the first 100 people in line get a free Big Mac.

Hungry? Check out guidelive.com/this-will-make-you-fat
for deliciously oversized food.

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