Here's a fact that should ruin at least one campfire this year: the marshmallow you are about to toast to a golden crisp was, for most of its 4,000-year existence, a cough medicine. Not a treat. Not a s'more filling. A medicine, made from a swamp plant, prescribed by ancient physicians for sore throats.
So how did a root used to soothe coughs turn into one of the fluffiest, most beloved lollies on the planet? Grab a bag (or a skewer) and let's follow the marshmallow from the marshes of the ancient world to the confectionery aisle.
A Swamp Plant Called Althaea Officinalis
The marshmallow's name is not a marketing flourish, it is literally where the thing comes from. Althaea officinalis, commonly known as the marsh mallow, is a wetland weed native to parts of Europe, North Africa and Asia, and it grows exactly where its name suggests: in marshes and other damp, salty ground.
The plant's root contains a thick, gluey sap, and it is this sap that ancient cultures first discovered had a soothing, almost medicinal quality when prepared correctly. Long before anyone thought to turn it into a treat, marsh mallow sap was valued as medicine.
Ancient Egypt: Sap, Honey and a Royal Reputation
The earliest known marshmallow-adjacent treat dates back to around 2000 BCE in Ancient Egypt. Egyptian healers squeezed the sap from the mallow root and mixed it with nuts and honey, boiling the root pulp with honey until it thickened, then straining and cooling the mixture into a soft confection.
This was not something everyone got to enjoy. The treat was reserved for gods and royalty, making the marshmallow one of history's original luxury lollies, thousands of years before it ended up wedged between two biscuits and a square of chocolate.
France Takes Over: Pâte de Guimauve
For most of its history, marshmallow stayed close to its medicinal roots, used across various cultures to soothe sore throats and coughs. That changed in the early-to-mid 1800s, when French confectioners got hold of the recipe and decided it deserved to be dessert.
Small French candy shops began whipping sap from the mallow root by hand into a fluffy mould, along with sugar, water and egg whites, to create Pâte de Guimauve ("mallow paste"). It was a genuinely laborious process, taking one to two days from start to finished sweet, which is partly why it stayed a boutique treat rather than an everyday one.
- The name "guimauve" is still the French word for marshmallow today.
- Making Pâte de Guimauve by hand could take up to two full days.
- It was considered a delicate confectioner's specialty, not a mass-market lolly.
Out With the Root, In With Gelatine
The marshmallow's next big transformation came in the late 1800s, when two industrial innovations arrived at almost the same time. The first was the starch mogul system, a manufacturing method where trays of modified corn starch have moulds pressed into them to create cavities, which are then filled with liquid candy to set into shape. It is still used to make all sorts of jubes and gums today.
The second innovation was more significant for marshmallows specifically: manufacturers replaced the labour-intensive mallow root sap with gelatine. Gelatine set faster, behaved more predictably, and could be produced at scale, and it is what gives modern marshmallows their springy, stable structure. By the early 20th century, the marshmallow as we now know it, cheap, fluffy and mass-produced, had arrived as a genuine penny candy.
1948: The Extrusion Breakthrough
The final piece of the puzzle came in 1948, when American confectioner Alex Doumak patented an extrusion process for marshmallows. Instead of moulding each marshmallow individually, the new method pushed a continuous rope of marshmallow mixture through a machine, which was then cut into the uniform cylindrical pieces we would recognise from any supermarket bag today.
Extrusion was a genuine manufacturing revolution: it turned marshmallow-making from a slow, mould-by-mould process into a fast, continuous one, and it is the basic method still used by most large-scale marshmallow producers.
A Quick Marshmallow Timeline
- c. 2000 BCE - Ancient Egyptians make an early marshmallow treat from mallow root sap, honey and nuts, reserved for gods and royalty.
- Early-mid 1800s - French confectioners create Pâte de Guimauve, whipping mallow root sap into a fluffy mould by hand.
- Late 1800s - The starch mogul system is developed and gelatine replaces mallow root, creating the modern, stable marshmallow.
- 1927 - The s'more appears in print for the first time, in the Girl Scout Handbook.
- 1948 - Alex Doumak patents the extrusion process, enabling true mass production.
From Sore Throats to Campfires
It's a genuinely strange arc: a swamp plant, valued as medicine by ancient Egyptians, painstakingly whipped into a delicacy by French confectioners, then re-engineered with gelatine and an extrusion machine until it became one of the cheapest, most recognisable lollies on shelves worldwide. Somewhere along the way, someone also had the very good idea of setting it on fire over a campfire, and honestly, that might be the marshmallow's finest achievement yet.
So next time you toast one to a perfect golden brown (or set it dramatically alight, no judgement), spare a thought for the ancient Egyptian healers and French candy makers who spent thousands of years turning a marsh weed into dessert.
References
- Wikipedia. Marshmallow.
- National Confectioners Association. Marshmallows.
- Wikimedia Commons. Althaea officinalis flower.
- Wikimedia Commons. Children Roasting Marshmallows, Mennonite Church USA Archives.