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Let's tell you more about America's most popular bonfire party.
This summer, 45 million pounds of marshmallows will be cooked by fire in America. Many of them will be used as ingredients for summer snacks: s'more. Scientific exploration of the perfect s'more may feel like a primitive tradition, curled up by a campfire and eating sticky marshmallows and hot chocolate sandwiched between two pieces of graham crackers.

But this process-including we untied the hanger used to make barbecue forks-is the product of the industrial revolution.

The oldest ingredient in s'more's holy trinity is marshmallow, a sweet food whose name comes from a plant and is properly called marshmallow. Cotton candy, or medicinal plant, is a plant native to Eurasia and North Africa. For thousands of years, people have boiled tree sap, filtered it, added sugar to treat sore throat, or simply eaten it.

The fluffy white modern marshmallow looks like its ancient ancestors. But for hundreds of years, the production of marshmallows is very time-consuming. Every marshmallow needs artificial casting, and only the rich can afford it. By the middle of the19th century, this process has realized the mechanization of bees, and machines can make them so cheap that they are included in the choice of most penny candy. Your marshmallows today don't contain marshmallow juice at all. Mainly corn syrup, corn starch and gelatin.

A16th century picture shows the sparkling chocolates of Aztec women. Because there is no sugar and milk, ancient chocolate is more bitter. Chocolate is another ancient food. Central Americans have been eating or drinking for 3000 years. /kloc-Europeans who met indigenous people in Mexico in the 0 th and 5 th centuries pointed out that chocolate was used to treat various diseases from dysentery and indigestion to fatigue and indigestion.

But once again, it was the industrial revolution that made chocolate cheap enough and delicious enough for ordinary people. Chocolate eaten by Central Americans is black, granular and a little bitter.

1875, in daniel peter, a candlestick merchant became a chocolate merchant and invented a method of mixing milk and chocolate. Then he added some sugar and modern milk chocolate was born. Peter's company finally merged two pieces of chocolate from Henry Nestle, and Peter's invention was called Nestle Chocolate Bar. As it turns out, it is more popular than the dark bars on the market, so other sweets, from Cadbury to Hershey, have launched their own versions.

Finally, Graham cookies were invented by Presbyterian pastor Sylvester Graham, who felt that vegetarianism could help curb the scourge of * * *, especially "self-pollution" (read: * * *).

The original graham crackers used unextracted whole wheat flour. Graham felt that separating wheat bran was against God's will. According to Graham, God must contain wheat bran for a reason.

In his paper on bread and bread making, he cited many examples of famous writers advocating eating whole wheat flour in history.

Graham was very influential in the development of healthy food movement in the19th century. His assistants included John Harvey Kellogg of Bater Creek Sanatorium, who used Graham crackers as the basis of his famous grain production line.

As for how graham crackers became a part of s'more, the real source of snacks is still unclear.

The first mention of this kind of treatment is in the 1927 edition of the female guide manual, which tramples on and follows the female guide. In order to prove the addiction of this therapy, it is called "Geng".

This word was first discovered by willaim henley Gibson in 1938 as a summer camp entertainment guide. Some people think that s'more may be homemade Maroma or moon cakes, which are two kinds of snacks introduced by 19 10.