Vinegar is not a single fermentation. It is two. The first stage is alcoholic fermentation. Yeasts convert sugars into ethanol and carbon dioxide. The second stage is acetic acid fermentation. Acetobacter bacteria oxidize the ethanol into acetic acid ? the compound that gives vinegar its sour taste. These two stages happen sequentially. The first requires…
Cheonggukjang ferments in two to three days. That speed is unusual. Most Korean fermented soybean products ? doenjang, ganjang, gochujang ? take months. Cheonggukjang takes less than a week because it relies on a single, aggressive bacterium: Bacillus subtilis. This organism produces powerful proteases that break down soy proteins rapidly, generating free amino acids, ammonia,…
Alcoholic fermentation is the process by which yeasts convert sugars into ethanol and carbon dioxide. It is the foundation of every alcoholic beverage humans have ever made — beer, wine, cider, sake, and Korean makgeolli. But makgeolli is not just another example of alcoholic fermentation. It demonstrates a version of the process that is more…
Every Korean household has gochujang in the fridge. You stir a spoonful into rice and that’s lunch sorted. But how many people actually know what gochujang is? Most stop at spicy, salty, red. That’s where the description ends. Gochujang is not a simple condiment. It belongs alongside doenjang and ganjang as one of Korea’s three…
Mention making doenjang and it sounds like something that requires decades of wisdom — a grandmother’s practiced hands, a courtyard full of clay pots, some remote countryside kitchen. That image comes to mind immediately. But when you actually look at what goes into it, doenjang is just soybeans, salt, and time. Simple ingredients. Wildly complex…
Kimchi fermentation is not a single event. It is a sequence of microbial shifts, chemical reactions, and environmental changes that unfold over days, weeks, and months — transforming salted cabbage into one of the most complex fermented foods in any cuisine. Understanding this process means understanding lactic acid fermentation in its most visible, most accessible…
Fermentation is one of those words that people use confidently without being entirely sure what it means. You might say kimchi is fermented, or that beer goes through fermentation, or that sourdough relies on fermentation — and you would be right every time. But what is actually happening inside that jar, that barrel, or that…
Most people think kimchi is one thing: red, spicy, fermented cabbage. You see it in grocery stores, Korean barbecue restaurants, and increasingly in fusion dishes around the world. It is easy to assume that you already know what kimchi tastes like. You don’t. Korea has a long history of fermenting vegetables, and kimchi developed differently…