The incredible power of the Egg McMuffin

It’s no secret that McDonald’s has been struggling. At a time when specialization is increasingly important in the food business, the brand has opted for breadth, offering everything under the moon: hamburgers, salads, yogurt parfaits and fancy chicken wraps. And it hasn’t worked. In fact, that’s putting it mildly.

Each time McDonald’s has announced how much money it’s making, the company has been forced to share an embarrassing truth: Americans are eating less and less of its hamburgers, chicken nuggets and French fries. The routine became so consistently depressing that McDonald’s decided to quit sharing monthly performance data altogether in March.

But all of that seems to be changing: For the first time in a long time, McDonald’s is thrilled to tell everyone how it’s doing.

On Monday, McDonald’s said that same-store sales (those open for at least 13 months) increased by 5.7 percent in the last three months of 2015, more than twice what analysts had expected. The hefty jump is the largest the company has reported in almost four years.