All British shielded vehicles have a type of water boiling vessel inside. This really fills two needs: making tea (or espresso) and warming up the plasticized foil sacks that UK military rations come in. They are intended to be drenched in heated water. ¹⁾

Caffeine constitutes about 3 percent of tea's dry weight. This translates to between 30 and 90 milligrams per 250-milliliter cup depending on the type of tea, brand, and method of brewing. The caffeine content of one gram of black tea ranges from 22 milligrams to 28 milligrams and the caffeine content of one gram of green tea ranges from 11 milligrams to 20 milligrams. ²⁾

Tea is divided into categories based on how it is processed. The three main categories include green tea, which is unwilted and unoxidized; white tea, which is wilted and unoxidized and black tea, which is wilted, sometimes crushed and fully oxidized. ³⁾

The Brits drink 165 million cups of tea a day. That's a staggering 60.2 billion a year.⁴⁾

All teas come from the same plant. Black, green, white, and Pu-erh all come from Camellia Sinensis, a subtropical evergreen plant native to Asia but now grown around the world. ⁵⁾

Tea was first discovered in China by Shen Nung in 2737 BC, who used it as an antidote to poisonous herbs. ⁶⁾

Rooibos is an herbal tea made from a plant that grows in South Africa. Its leaves look like needles and are fermented like regular tea leaves. ⁷⁾

Tea absorbs moisture, so it is important to store tea bags in an airtight container. ⁸⁾

Mint tea is not a tea - it is an infusion. All teas classified as tea must come from the leaves of the Camellia Sinensis plant. Everything else, like herbs (like mint), fruits (like raspberry), and so on, is an infusion. ⁹⁾

Tea bags were invented in the United States in 1904. ¹⁰⁾

Black tea undergoes the longest oxidation process. White tea has the shortest oxidation process. ¹¹⁾

Black teas are made from leaves that are fermented and then heated to remove moisture. The heat changes the color of the leaves to black. ¹²⁾

The practice of mixing milk with tea has to do with social class, not taste. Low-quality china cups would break when hot tea was poured into them, so pouring milk in first meant that the cups would remain intact. ¹³⁾

85% of the tea consumed in the United States is iced tea. ¹⁴⁾

Lipton is the world's best-selling tea brand. ¹⁵⁾

After water, tea is the most consumed beverage on Earth. ¹⁶⁾