Ice cream can be traced back to a frozen milk dish from the 7th century.

Kulfi, an ice cream predecessor that's still popular in India, dates back to the 16th century.

In the 19th century, ice-cream-related illnesses were somewhat regular in America thanks to vendors' poor hygienic practices.

Agnes Marshall invented 'ices,' the Victorian equivalent of ice cream, and improved the period's hygienic practices for consuming the dessert.

In 1694, a Sicilian in Paris opened the first gelateria, a precursor to the ice cream parlor.

Ice cream, gelato, sorbet, and Italian ice are all popular cold desserts, though they have many important differences.

America's ice cream obsession began under Prohibition, with the street treat acting as a legal vice that helped ease the pain of the Great Depression.

Ice cream’s unfrozen consistency is thanks to sugar

Making ice cream is a complex, multistep scientific process. But the treat’s scoopable, chewable consistency is due to the product’s dissolved sugar.

George Washington loved to serve ice cream while hosting guests, and spent thousands of dollars on ice cream in a single summer.

High freezing speed restricts the development of gritty crystal chunks in ice cream

For this reason, ice cream does not maintain its smoothness when refrozen in a traditional freezer over several hours. The smooth texture is also made possible by balancing fat, sugar, and emulsifiers.

Food allergies were first documented more than 4,000 years ago.

Ancient Romans helped develop modern cheese production techniques

The ancient Romans loved cheese and experimented with different processes to elevate its flavor, like aging. Some of their innovations, like Pecorino Romano, you can still find today. Others, like the smoked goat-milk Caseus, we only know about through historical records.

The invention of cheese likely came from a fruit fly landing in a pail of fermenting milk

The chance encounter around 5,500 years ago laid the groundwork for cultured milk products like yogurt and cheese. Over time, microbes evolved in tandem with goats, sheep, and wheat to give us the wide variety of cheeses that we enjoy today.

Vanilla was originally used as an additive in chocolate rather than as a standalone flavor.

Tasty vegan ice cream depends on fat

Making delicious ice cream without dairy is a challenge for food scientists because most nondairy milks have more water than fat, which creates tasteless ice crystals when frozen. The key is finding a base with enough fat to give the finished product its signature creamy mouthfeel.

The Mister Softee ice cream truck began with two brothers in a Chevy van in Philadelphia, selling green ice cream.

Cookies were originally used as low-stakes ways to test the temperature of an oven

In 7th century Persia, bakers used small mounds of dough to test the heat in ovens before baking larger cakes. Afterward, they'd add honey, nuts, and other items to the small mounds, creating early cookies.

Dairy Queen can't legally call its frozen dairy products 'ice cream' because they don't meet FDA qualifications for the term.

The frozen margarita was invented in Dallas using a repurposed soft-serve machine

On May 11, 1971, Dallas restaurateur Mariano Martinez adapted an ice cream machine to produce frozen margaritas using his father's recipe. The original machine now sits in the Smithsonian's National Museum of American History.

There's no definitive reason why an ice cream sundae is spelled with an 'e' rather than a 'y.'

The frozen pizza was invented in 1950

In 1950, some pizzerias were premaking pies, allowing customers to take them home and cook them at their convenience. That same year, Philadelphia's Joseph Bucci filed a patent for a "Method of Making Frozen Pizza." Soon, frozen pizzas were appearing in grocery store aisles.

When did people start making and using glass?

This article details the search for the ancient origins of glass, a now-common item through which archaeologists can spot histories of trade and innovation. Bronze Age glass was made from crushed quartz instead of sand, and artisans could color glass with materials such as cobalt. These trace metallic add-ons have given scientists a vital clue into the origins of glass, which is currently debated as either Egypt or the Near East.

A guide to making ice cream with liquid nitrogen by flash-freezing dairy

Only existing in liquid form at extremely low temperatures, nitrogen can rapidly freeze cream, coconut milk, and other liquids into small crystals, producing smooth, creamy ice cream. As a safety precaution, liquid nitrogen should be handled in a well-ventilated area with safety goggles and protective gloves.

Ice cream trucks are surging in popularity

Modern companies like HipPOPs and Big Gay Ice Cream are driving a resurgence of ice cream trucks, with an annual growth of approximately 9%. Experts say the market will keep growing through at least 2030.

97% of Americans polled say they like or love ice cream

Ancient Rome had an early version of macaroni and cheese

Called placenta (with a hard "c"), the holiday dish consisted of sheets of rolled-out dough layered with cheese. It is the first recipe documenting the combination of the two elements. While there is debate about whether the dough can be called pasta because it's not boiled, many scholars view the dish as a proto-lasagna.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

One US Marine fighter squadron made their own ice cream during World War II

To boost his squad’s morale during World War II, squadron commander J. Hunter Reinburg developed a method for making ice cream on the fly: Empty ammo cans filled with ingredients were flown at altitudes high enough for them to freeze.

Tracing the history of refrigeration

Refrigeration has become critical to most of our lives. But not long ago, it wasn't available. How did we become so dependent on our fridges and freezers? This fun, informative podcast traces the history of keeping it cool with ice and...