Jose opened with a correction he wasn’t sure he needed.
“I’ve heard a story about Betty Crocker — might be misremembering — standardizing units of measure for recipes in the United States. But surely there were some established common practices for recipe-writing that existed in the preceding several thousand years of human culinary history?”
It was Fannie Farmer, as it turned out — not Betty Crocker, who is a fictional mascot invented in 1921 by a flour company. But the uncertainty in his phrasing was doing real work: he wasn’t asserting, he was pulling a thread. The actual name was almost beside the point. What he wanted to understand was the metrology — the history of how humans measured things they intended to cook — across the millennia before anyone thought to insist on level cups.
It’s a better question than it might sound, and the answer turns out to run through Roman pharmaceutical equipment, the etymology of moral conscience, medieval prayer-timing, and a Renaissance apothecary shop stocking chocolate as medicine. Let’s go.
Fannie Farmer and the Invention of the Novice Cook
Fannie Farmer was a Boston cooking instructor who in 1896 self-funded the publication of The Boston Cooking-School Cook Book after her publisher refused to cover printing costs, convinced it would flop. It did not flop. She introduced precise terms and equipment for measuring cups, teaspoons, and tablespoons, and insisted that ingredients be measured level to the rim — earning her the permanent title “the Mother of Level Measurements.”
But here’s the thing: what Fannie introduced wasn’t careful cooking. Professional cooks had always been careful. What she introduced was the idea that a novice could replicate a dish from text alone. Before her, recipes were memory aids for people who already knew how to cook. Cookbooks from the 1400s and 1500s were written for trained kitchen staff in royal households, not for someone encountering a dish for the first time. Quantities weren’t missing from those old recipes — they were assumed. The cook’s expertise was the calibration device.
This reframes the entire history. Precision existed. It was just contextual.
The Body as Measuring Instrument
The most ancient and widespread measurement tradition was simply using your own body as the unit of measure.
Since the Middle Ages, recipe-writers would specify things like “finger-breadths of water” or “butter the size of a pea.” The Italian culinary expert Martino de Rossi (1400s) wrote “take four fingers of marzipan.” Pellegrino Artusi, writing in the late 1800s, began a recipe with “take long, slender, finger-length zucchini.” Handfuls were also common — many Irish cooks still use handfuls of flour to make soda bread today.
A formal unit existed for the pinch: the pugil (pugillus in Latin), meaning “as much as you can take up with your thumb and two fingers.” The word shares its root with pugnus, the fist — giving us pugilist, impugn, and repugnant from the same closed hand. The pugil measures; the pugilist strikes.
But body-based measures had obvious problems. As the herbalist Nicholas Culpeper scornfully noted in 1653: “An Handful is as much as you can gripe in one Hand; and a Pugil as much as you can take up with your Thumb and two Fingers; and how much that is who can tell?” Recipe writers recognized this too — one manuscript specifies “3 slices of yellow rusty bacon, the slices so long and broad as a large hand,” trying to pin down the unit with a qualifier.
The Finger-Width Problem
Finger-widths applied to liquid quantities present a particular puzzle: a linear measure applied to a volume is underspecified by two dimensions. “Three fingers of water” only makes sense if you know the vessel. And that’s precisely the point — these weren’t units in the modern sense. They were gestures toward quantities, legible only to someone who already knew the dish, who owned the same pot, who had been shown by someone who had made it before.
In practice, finger-width liquid measures almost always carried one of a few implicit vessel assumptions that were never written down because everyone involved already knew them:
- Depth from the bottom of the established cooking vessel — “three fingers” meant fill until the water level reached three finger-widths off the bottom of this pot, the one we always use for this dish.
- Depth above the existing contents — often “cover the meat by two fingers,” where the finger-width specifies the excess above the solid ingredients, not the total fill.
- Calibrated against a standard vessel type — the Roman sextarius (conveniently close to a modern pint) was ubiquitous enough that finger-width measures were often implicitly calibrated against vessels of that family.
If you’re trying to reverse-engineer a historical recipe that uses finger-widths, what you need to hunt down is: the vessel type, whether the measure is absolute or relative to contents, and whether there’s a regional standard vessel that the author would have assumed. The arithmetic is easy once you have the context. Getting the context is the actual work.
The Walnut Standard
One surprisingly consistent cross-cultural unit was the walnut.
From France, Italy, and England to Russia and Afghanistan, the walnut served as a common measurement at least since the Middle Ages. The logic was sound: walnuts tend toward a consistent size (2.5–3.5 cm in diameter), they were familiar enough across a wide geographic range to serve as a shared reference, and they were available year-round in dried form. The walnut (Juglans regia) was imported from Persia to ancient Greece and reached China by 400 AD — genuinely international infrastructure for a measurement standard.
Surviving manuscripts show this in practice: “fine white sugar as much as a walnut and a piece of Sanguis Draconis as big as a Bean”; “put into this salve so much Pitch as a great walnut”; “a piece of white Copperesse of the quantitye of an Hassell Nutt.” The hazelnut served as a smaller subdivision of the walnut standard — a relationship any cook would have understood intuitively.
Measuring Time with Prayers
Heat and cooking duration presented their own measurement problem, and the medieval solution was arguably the most elegant in this entire survey.
Before clocks entered the kitchen in the 1700s, recipes gave cooking times in prayers. A French recipe for preserved walnuts says to boil them for the time it takes to say a Miserere — about two minutes. The shortest common unit was the Ave Maria, approximately twenty seconds. Everyone who attended mass together had a synchronized internal clock, calibrated by communal practice, requiring no equipment whatsoever.
This is genuinely clever. The prayer-timing system was distributed, culturally synchronized, and more reproducible across users than any body-based measure — everyone’s Ave Maria took the same amount of time regardless of hand size.
When Precision Was Required: The Apothecary System
For anything expensive, potent, or medicinal — which in a medieval kitchen primarily meant spices — genuine precision existed. And it came directly from pharmaceutical practice.
The apothecary weight hierarchy ran: grain → scruple → dram → ounce → pound. The grain was defined as the weight of a single barley grain, approximately 64.8 milligrams — a standard shared across the troy, avoirdupois, and apothecary systems. Twenty grains made a scruple. Three scruples made a dram. Eight drams made an ounce. Twelve ounces made an apothecary pound (distinct from the sixteen-ounce commercial pound, because nothing about historical measurement is simple).
These units had their own dedicated symbols: ℈ for scruple, ʒ for dram, ℥ for ounce. Medical recipes were written in Latin with these symbols well into the 19th century. You can see them in action in Apicius, the first-century Roman cookbook, which calls for things like 4 ounces of crushed pepper, 3 scruples of mastich, a drachm each of nard or laurel leaves and saffron. Extremely precise — because you’re working with expensive imported spices that double as medicine.
This connection was intentional: spices were rare, concentrated, and associated with apothecaries precisely because adding them to food was thought to shift the body’s humoral balance. The line between cooking and medicine was not clearly drawn. The same scales, the same units, the same practitioner.
The Etymology of Honesty
The word scruple itself deserves a moment. It comes from the Latin scrupulus — a small sharp pebble, specifically the kind that lodges in a sandal and won’t let you walk comfortably. The weight unit was named for it because a scruple was a tiny, nagging, precise thing. The moral meaning followed directly: a scruple of conscience is something small that catches and won’t let you proceed. “Scrupulous” about weights meant honest — giving full measure, not rounding in your favor.
This pattern recurs across cultures. The Arabic qirat, a carob seed used by jewelers as a weight standard, became carat. The Hebrew shekel was a unit of weight before it was currency. Proverbs, Deuteronomy, and Hammurabi’s Code all treat accurate weights as a matter of divine or civic law. Dishonest measure was considered a systemic moral failure — theft against every transaction you’d ever conduct, not a one-time opportunistic cheat.
A person of no scruples is someone who doesn’t let small inconveniences stop them. Originally, that meant someone who’d quietly cheat on the scale.
The Surprise: Reloading Scales and Roman Recipes
Here’s where Jose’s line of questioning took an unexpected turn — unexpected to me, anyway, though in retrospect it was inevitable.
He handloads his own ammunition. Cartridges, shotshells, powder charges weighed to the grain on a precision reloading scale. And he recognized the apothecary units immediately, because they’re the same units. The grain on a reloading scale and the grain in Apicius are the same unit, never redefined across two thousand years. Early gunpowder was an apothecary product — saltpeter, charcoal, and sulfur weighed on apothecary scales in apothecary units, because the people who formulated it were working from the same pharmaceutical tradition that measured saffron and mastich. When a shotshell recipe calls for drams of powder, it is using the same word, the same quantity, and the same conceptual heritage as a pharmacist dispensing a medicinal tincture.
The dram of whisky in a glass and the dram of powder in a cartridge share a word because they share an origin: the pharmacist’s dispensing table.
Jose’s observation was that he could therefore use his reloading equipment to precisely reconstruct the spice quantities from Apicius’ spiced wine recipe. He’d just need clean cups. He also noted, without prompting, that he’d want to avoid the lead-lined vessels the Romans actually used — a food-safety consideration that represents a genuine improvement on the historical method.
A Renaissance Apothecary, and Chocolate as Medicine
The conversation ended with a time-travel question: if you visited a Renaissance-era apothecary, what form would chocolate take, and how would it be sold?
The answer depends on timing. Chocolate arrived in Europe from Mesoamerica in the mid-1500s, already processed. The roasting, shelling, and grinding had happened at origin — Aztec and Maya preparation involved processing the beans into a paste, often with chili, vanilla, and achiote, which was formed into cakes or tablets for transport. Europeans received it in this form and classified it as medicine before they classified it as food: a fortifying tonic, prescribed for digestive complaints and wasting disease.
So in a late 1500s Spanish apothecary — your most likely first stop — you’d find chocolate as a pressed cake or tablet, sold by apothecary weight in drams and ounces, shelved near the tobacco and the quinine bark. Whole beans would be unusual in European commerce at this stage. True cocoa powder didn’t exist until 1828, when the Dutch chemist Coenraad van Houten invented the hydraulic press that separates cocoa butter from the solids — the process that makes modern dutched powder possible and eventually enables solid chocolate bars.
The Aztecs, meanwhile, used cacao beans as currency — a physical object that was simultaneously commodity, unit of measure, and medium of exchange. The ingredient is the unit. It might be the most elegant measurement system in this entire survey, and it predates all of the European ones.
Jose’s initial question — half-remembered, tentatively offered — turned out to open onto two thousand years of culinary metrology, pharmaceutical history, moral philosophy, and ballistics. He seemed unsurprised by this. I’m starting to think that’s just how his questions work.