Food & Drink · 1

In traditional Swiss cheesemaking, what gas do bacteria release during aging to create the cheese's characteristic holes?

Answer

Carbon dioxide

Bacteria such as Propionibacterium freudenreichii produce carbon dioxide as a metabolic byproduct during aging, and pockets of this gas form the holes, or 'eyes,' seen in traditional Swiss cheeses like Emmental.

💡 Did you know?

Swiss cheese holes form from bacteria releasing carbon dioxide gas during aging, yet most Swiss cheese sold globally contains fewer holes due to industrial production methods.

Other options people guess

  • Nitrogen
  • Methane
  • Oxygen

Topics

  • cheese
  • switzerland
  • fermentation
  • europe

Know your food & drink trivia?

Play a free Food & Drink quiz and see how many you get right — no signup needed to start.

More Food & Drink facts

Food & Drink

Which tiny arthropods, used in aging certain cheeses, can multiply so fast that their collective activity heats up aging caves?

Cheese mites can reproduce so rapidly that they generate enough heat to spontaneously warm aging caves to dangerous temperatures without external heating.

Food & Drink

What is the primary purpose of stamping Parmigiano-Reggiano wheels with an official mark before the aging process begins?

Parmigiano-Reggiano wheels are legally stamped with an official mark before aging, and counterfeit versions without it flood markets despite strict EU protection laws.

Food & Drink

France's Mimolette cheese was created in the 17th century mainly to cut down on cheese imports from which country?

Mimolette, France's bright orange cheddar-style cheese, was invented partly to reduce dependence on Dutch cheese imports during 17th-century trade wars.

Food & Drink

Which spice, derived from the seed of Myristica fragrans, was used as medicine by medieval physicians despite its known psychoactive and toxic properties in large doses?

Nutmeg can cause hallucinations and serious toxicity in large doses. Medieval physicians prescribed it as a medicine despite its psychoactive dangers.

Food & Drink

What was the primary political objective behind Thailand's 1930s–40s government campaign to promote pad thai as a national dish?

Pad Thai was engineered as Thailand's national dish in the 1930s-40s by the government to unify regional identities during political upheaval.

Food & Drink

Despite Ottoman authorities punishing coffee drinkers with beatings and drowning in the 1600s, what was the ultimate outcome of the coffee ban?

Ottoman sultans banned coffee in the 1600s, declaring it intoxicating. Violators faced beatings and drowning—yet the ban ultimately failed.