But why is Google celebrating the pretzel? Here's what you need to know
Why is Google celebrating the pretzel?
The pretzel is being celebrated on Google's Doodle today, and it's not just because they're a tasty snack.
21 September is the day that officially marks the beginning of the Bavarian festival of Oktoberfest - and pretzels play a big part in the celebration.
The Bavarian pretzel is a classic Oktoberfest snack, and its origins are hundreds of years old.
But the design of a pretzel actually has religious meaning - as the twisted knot is meant to symbolize arms folded in prayer.
It's also thought that the saying "tying the knot" refers to a 17th century custom of using a pretzel during wedding ceremonies.
Pretzels, because they're made without dairy or eggs, have become a staple treat for many people.
They are also known for being incredibly versatile - and they can be enjoyed when they're hard or soft, salty or sweet or buttered or plain.
The crunchy outside and soft inside may be perfected in Germany, but pretzels are loved worldwide.
What is Oktoberfest?
Oktoberfest is the world's largest beer and travelling funfair festival held annually in Munich, Germany.
It's a 16-to-18-day festival which over six million people attend every year.
Despite having Bavarian origins, the festival is celebrated across the world, even in the UK.
The celebrations started over 200 years ago at a royal Bavarian wedding which lasted multiple days.
Traditionally, Oktoberfest is celebrated with continuous days of drinking, feasting and horse races.
People will usually dress up in traditional German clothing, like dirndls and lederhosen.
As well as other traditional foods like roast pork and German sausages, pretzels are one of the most infamous Oktoberfest treats.
Why did pretzels become so popular?
During the 19th century, bread business owner Julius Sturgis decided to bake his pretzels until they were hard - which extended the shelf-life of the loved snack.
The baker, based in Pennsylvania, innovated the Bavarian treat and allowed it to be shipped worldwide.
In 1947, the Reading Pretzel Machinery Company was among the first to use machinery to create pretzels - and they could crank out up to 250 pretzels per minute.