Peter Durand and the Tin Can
What it is
Peter Durand was the British merchant who, in 1810 — the same year Appert published — patented the use of metal containers, specifically tinplate (tin-coated iron), for preserving food by Appert's heat-and-seal method. His patent gave the world the tin can, the rugged, portable, near-indestructible vessel that would carry canned food across empires and battlefields and become one of the defining objects of the industrial diet.
The science
The genius of tinplate is a two-metal solution to two problems. Iron (later steel) provides cheap structural strength — a thin sheet that won't shatter like glass and can be soldered airtight. But iron rusts and reacts with food, so it is coated with a thin layer of tin, which is far less reactive, non-toxic in food contact, and corrosion-resistant; the tin protects the iron from the food's moisture and acids and protects the food from iron contamination and off-flavors. The sealed can, once heat-sterilized, is an excellent oxygen and microbe barrier — better than cork-and-wax glass, and unbreakable. (The hidden hazard of early cans was the lead solder used to seal the seams, which could leach into food, a danger not understood for over a century.)
Reference notes
Cross-link to Nicolas Appert and the Hermetic Sealing Discovery (the method Durand adapted to metal), The Botulism Risk in Early Canning (the shared sterilization hazard), and The American Canning Industry (where the can was mass-produced). Tag: tin can; tinplate; Durand; Donkin & Hall; Royal Navy; can opener gap.
How its done
Early tin cans were entirely handmade by skilled tinsmiths: a rectangle of tinplate was bent into a cylinder and its seam soldered, a bottom disc was soldered on, the food was packed in, a top disc with a small filling hole was soldered on, the can was heated to sterilize and to drive off air, and finally a drop of solder closed the hole. A good tinsmith could make only around sixty cans a day, which made early canned food a premium product. The cans were heavy, thick-walled, and laboriously produced — a far cry from the thin, machine-stamped, double-seamed (solderless) "sanitary cans" that mass production would later achieve.
When to use
The tin can is the right vessel wherever durability, portability, and total light/air exclusion matter more than seeing the contents — which is to say, military rations, ship's stores, polar expeditions, and any food meant to survive rough transport and long storage. Metal beat glass decisively for these uses: it didn't break, it was lighter for its strength, and it blocked light (which degrades many foods). Glass retained its niche where consumers wanted to see the product or reuse the container (home canning).
What goes wrong
The most famous failure of early canning is comic and emblematic: the can opener was not invented for roughly fifty years. Durand's cans (1810) predate the first practical can openers (Robert Yeates in England, 1855; Ezra Warner in the U.S., 1858) by nearly half a century. Early can labels literally instructed the user to open the can with a chisel and hammer, or a knife, or — for soldiers — a bayonet. The thick early cans simply assumed brute force. Beyond the opener, early cans failed through bad seams, under-sterilization (botulism risk), and lead-solder contamination; the lead-poisoning hypothesis surrounding the doomed 1845 Franklin Arctic expedition, which carried tinned provisions, remains a debated but vivid example of the era's hidden hazards.
Regional variations
Durand's patent passed to Bryan Donkin and John Hall, who opened the first commercial cannery in Bermondsey, London, around 1813 and won contracts supplying the Royal Navy and Army — fixing canned food's early identity as military and maritime provision. From Britain the can spread through the empire and to America, where it would be industrialized at a scale Britain never matched. The "tin" remains "tin" in British English long after cans became mostly steel, while American English shifted to "can."
Cultural context
The tin can is one of the most consequential containers ever made: it untethered food from refrigeration and from fragility, allowing armies, navies, explorers, and eventually ordinary households to carry concentrated nutrition anywhere. Its early association with the British military seeded a global infrastructure that two world wars would expand enormously. The half-century gap before the can opener is more than a joke — it shows how often a technology arrives before its complete system of use, the same lag that defines this entire era.