Not many foods inspire a fandom quite like Nutella.
McDonald's restaurants in Italy serve it on hamburger buns. Lifestyle websites cheekily offer lists of "signs you're addicted to Nutella." And at least one German soccer team dropped a player who couldn't stop eating it.
Yes, a legion of snackers live for the hazelnut spread. And they're not happy.
Nutella confirmed on its Twitter feed Wednesday that the recipe "underwent a fine-tuning." This was after Germany's Hamburg Consumer Protection Center said on Facebook that it appeared the recipe had changed.
That set off both panic and anger on social media in a symphony of languages — English, German and Italian chief among them.
"Real cool," wrote one user, adding, "why not draw a mustache on the Mona Lisa too?"
"OMG!! They are changing the recipe of #Nutella !!! NOOOOOOOO HOW DARE THEY!! Leave the sugar & coco alone!!!" wrote one slightly more impassioned user. The tweet also included five angry-face emojis, two screaming emojis, two disappointed-face emojis and three crying emojis.
It even spawned a hashtag: #NutellaGate.
Ferrero is the Italian company that makes Nutella, Tic Tacs and Ferrero Rocher chocolates. The company insisted that "the quality ... and all other aspects of Nutella remain the same," in a statement obtained by the BBC.
The changes are to its milk and sugar content. The new recipe has 8.7 percent powdered skim milk, instead of 7.5 percent. It also contains 56.3 percent sugar, instead of the previous 55.9 percent, the Hamburg Consumer Protection Center said, according to Deutsche Welle.
"As the color of the new Nutella is lighter, we are working on the assumption that skimmed milk powder was added at the expense of cacao," the center said. Ferrero did not confirm this.