FermenteaWhere food goes to change
Source-linked articles on foods, ingredients, traditions and equipment.
Apples keep longer in air with less oxygen. Researchers tested that in Cambridge and Queensland, and packers now use it for salads and meat. What the gases do, what they cost and what they cannot make safe.
Miso, soy sauce and doenjang share one idea: let a first stage break down beans and grain, then add enough salt that only a few microbes can follow. In Korean doenjang, bacteria do most of the work.
Sweet miso can be ready in under three weeks; Hatcho miso is said to take two summers and two winters. What salt, temperature and microbes do in between has been measured in pieces that do not yet fit together.
Nori, laverbread, Korean seaweed soup and carrageen pudding all begin as algae used for different jobs. This account covers seaweed names, coasts and farms, their histories, cooking, fermentation and composition.
From Gunditjmara eel traps to Chinese carp ponds, Dutch eel bins and British well-smacks, people have stored fish by keeping them alive. The method works until the water fails.
Follow milk into cheese, cultured drinks, butter, dried curds and sweets: a journey through the animals, seasons and household decisions behind the world's dairy foods.
People kept, traded and steered living ferments for thousands of years before anyone saw a yeast cell. This is that history, region by region, and a guide to what a yeast strain is today.
In southern Sweden, a Mesolithic pit packed with fish bones has been read as the earliest known fermentation, made with no salt and no pots. What the evidence shows, how firm the case is, and how it compares with rakfisk.
Soybeans become a drink, a set curd or a lifted skin depending on how the hot milk is held: still in a deep container, broken and pressed in a mould, or spread wide in a shallow pan.
Every preserved food is a stack of barriers against microbes, enzymes, air and time. This is how they work, what a recipe's numbers measure, and how cooks worldwide build them.
A proofer, a dehydrator with its trays out or an old fridge on a controller can keep cultures at a steady temperature. Whether it works depends on what sits inside: a lidded jar, a vented bag, a shallow tray or a crock.
Benzoate, sorbate, sulphite and saltpetre work at tiny doses, and they lean on the same thing a good ferment does: acid. How they work, where they stop working, and why the nitrite limits fell.
Food makers add protective bacteria, the antimicrobial peptides those bacteria make, and even bacteria-killing viruses to hold back Listeria. Each is chosen, dosed and aimed at a narrow target, which is what sets it apart from fermentation.
Ketchup, mayonnaise and mustard are three kinds of kitchen engineering. This guide shows how each works, compares real bottles instead of national clichés, then follows the sauces of Asia, the Caucasus, Europe, the Americas and Africa.
Kombucha starts as sweet tea and becomes a changing mix of sugars, acids, alcohol and gas. This guide covers its history, the culture, substrates, vessels, measurements, bottling and what health research can support.
In Myanmar's Kale Township, smoking a batch of rohu took 12–14 hours. A brick kiln from Senegal cut that to 7 and used a third of the fuel. Whether the fish are safer is still unmeasured.
Mushrooms can be a meal, a broth's flavour, a forest harvest or an indoor crop. This survey follows edible fungi across East Asia, Africa, the Americas and desert regions, their kitchen roles and how harvests are kept.
A slow cooker can heat milk for mozzarella, paneer, ricotta, mascarpone, quark and yogurt, but its heavy crock keeps heating after it is switched off. This is what each fresh cheese needs from it.
Nobody adds a culture to idli and dosa batter, yet it rises overnight. A 1965 paper named the bacterium responsible; a 2019 study says that bacterium was probably a different genus.
Garum, liquamen, allec, muria and haimation were different Roman and Greek fish products, and the words never kept one meaning. What the texts, a price list and one buried jar tell us.
Chinese texts were counting jars of jiang, pairing it with raw fish and venison, and making it largely from meat long before anyone wrote down soy sauce. How a whole class of sauces narrowed to a bean paste.
Nepali households turn surplus greens and radish into dried, sour staples with no salt in the jar. The pot, pit and laboratory methods give different timings, and the sources disagree on temperature and moisture.
Lactic acid bacteria make a mushroom ferment sour and safe to keep. Add a yeast beside them and the smell changes. A Thai study of Nham Hed shows what the yeast does, and what it cannot do.
A measured dose of radiation can cut back insects, moulds and bacteria in food without cooking it. US ceilings run from 1 to 30 kGy, and the rules grew out of a mid-century Army programme.
In August 1992 an expedition found Negidal smokehouses still in use on the Lower Amur. One recorded shelter, a shallow fire pit under a bark-covered pole frame, opens onto a salmon people's food and a river short of fish.
Monnickendam had 34 smokehouses in the 1930s. The dam that turned the Zuiderzee fresh took the herring away, and the eel stayed. What the records say about the trade, and where they disagree.
Rumtopf in Germany, cherries in Lisbon, green ume in Japan: steeping fruit in strong spirit makes a preserve and a liqueur at once. How it works, what is known of its past, and where the evidence stops.
In 1626 a retired lord wrote to his son that a tub of rice-bran paste had tasted good. Four centuries on, scientists are working out what lives in such a bed, where the microbes come from and why a new bed takes weeks to ripen.
Desert truffles spoil within hours or days. Some Bahraini Bedouin pickle them in vinegar and salt, a practice with one line of evidence and no safety data. Here is what a safe acidified pickle needs, and what is missing.
Restaurant and research kitchens now make garum from beef, chicken skin and peas, often with koji and weeks in a warm room. Their figures disagree, so does the science, and no home version has been shown to be safe.
Propionic bacteria make the gas in Emmentaler, and hay particles decide where the holes start. Follow the gas through the warm cellar and a defect case, then on to Gruyère, Jarlsberg and Baby Swiss.
Akita closed its sandfish fishery in 1992 and the sauce makers who relied on it vanished. The story of shottsuru, ishiri and ikanago shoyu, and why no single method describes them.
A heat-pump dryer wrings the water out of the air it recirculates and reuses the heat. Drying shiitake took 0.85 kWh per kilogram against 6.67 for hot air, at a price in shrinkage. Here is how it works and how far the results carry.
Kombucha turns sweet tea into a sour, fizzy drink; jun does it with green tea and honey. How both are made, where health agencies set their limits, and why jun's origin story has no source behind it.
Every root crop is cut and bruised at harvest, and each gets a short window to seal the damage. The heat, the humidity and the days differ by crop, and for cassava the benefit is still argued over.
Raisins soaked in water bubble within days, and an 1898 cookbook already called the result a yeast. Lab tests show what the jar adds to bread, what it does not, and what nobody has validated.
A plant-based camembert has no milk to sour, so the cook adds bacteria and a mould and waits two weeks. What the Warsaw trials and a home recipe show, and why raw nuts and fresh cheese have caused outbreaks.
A dug cassava root starts to spoil within a day, so farmers leave it in the earth. Parsnips under straw, yams in pits and carrots in a cellar follow the same idea: keep the food alive and slow it down.
A blue cheese is a mould grown inside solid curd, so the cheesemaker has to let air in. Needles, open curd, cellars and caves do it, and six protected cheeses do it six different ways.
Commercial pickle tanks are open to the sky and have no culture poured in. Research on them, and on home and Polish village methods, shows a changing crowd of bacteria, vinegar in the brine and a gas problem called bloating.
A picked mushroom keeps breathing and growing. A fridge 3 °C warmer than it should be can cut its life from a week to two days, and the cold that saves a button mushroom ruins a straw mushroom.
Thai curries are sorted by colour, but the work happens in a stone mortar, and two of the saltiest ingredients had already fermented for months. How pastes are built, how the pot is run, and why Massaman has no agreed past.
Cetara's amber colatura, Thai nam pla, Cambodian prahok and Korean jeotgal all start with fish and salt. A few choices separate them, and the published figures for those choices often disagree.
Jars, barrels, skins, leaves, pits and whole rooms decide much of what happens to fermented and cured food. This is how a container works on its contents, and how people in different places chose theirs.
Sichuan cooks ferment vegetables in a water-sealed jar and keep the brine for the next batch. Studies show what lives in it and what salt, acid and air do, but no one has published a safe home method.
Blanched mushrooms do not sour easily on their own. Polish researchers found that a lactic bacterium taken from fermented mushrooms does the job fastest, and measured what fermenting does to the food.
Women at Matombi smoke and sell manzi, a fish no source identifies. Pointe-Noire’s drum ovens were described in 1989; the carcinogens in smoke were measured only in Ghana.
A home brewing kettle can hold a cheese pot in hot water, supply wash water and reheat whey. This is what two brewer manuals allow, and which cheeses show each job.
Dairy yogurt sets because milk has casein and lactose. Soy, oat and nut milks have neither, so makers borrow cultures, add starch and agar, and still get gels that are thin or separate. What the research shows.
Butter chicken has two inventors, both named Kundan Lal. Behind its sauce sits a small system of cooked bases, which two Indian cookery textbooks count differently, and a plain question: how long does a batch keep?