A woman has gone viral on TikTok after sharing her 17 year experiment. She kept a McDonald’s cheeseburger and fries that she bought in 2004. In the video, she opened the meal to see what it looked like after almost 20 years.

The woman took out the fries first. She was shocked to discover that besides being hardened, they look pretty much the same.

She then takes out the cheeseburger and looks at the meat. She noted that there was no mold on it.

The cheese, however, did not look the same. The woman’s children are heard in the video saying the cheese looks like “peanut butter.”

The TikTok quickly caught the attention of thousands.

One user said, “It looks exactly alike.”

Another wrote, “We can’t be eating that!”

“That food is as old as me,” one person said.

Many people commented that they would never eat at McDonald’s again.

So why doesn’t the McDonald’s food seem to age? Well, the company answers that on their corporate website.

“In the right environment, our burgers, like most other foods, could decompose. But, in order to decompose, you need certain conditions – specifically moisture. Without sufficient moisture – either in the food itself or the environment – bacteria and mold may not grow and therefore, decomposition is unlikely. So if food is or becomes dry enough, it is unlikely to grow mold or bacteria or decompose,” the website reads.

“Food prepared at home that is left to dehydrate could see similar results. Look closely, the burgers you are seeing are likely dried out and dehydrated, and by no means the same as the day they were purchased. The reality is that our burgers are made only with 100% USDA inspected beef. There are no preservatives or fillers in our patties and the only thing ever added is a touch of salt and pepper on the grill,” the website says.