Description
| Le shoyu (sauce soja japonaise) résulte d’au moins deux fermentations (trois pour le saishikomi).
1) Fermentation en milieu solide (koji) : 2) Fermentation en milieu liquide (moromi) : Ce koji est ensuite plongé dans une saumure où il fermente longuement, de 3 à 12 mois ou plus. Quand on ajoute du koji de riz dans un shoyu déjà fermenté, on obtient du shoyu-koji. Le koji apporte une grande quantité d’enzymes actives qui relancent la maturation : elles décomposent encore davantage les protéines, les sucres et même certains lipides du shoyu. C’est pour ça que c’est si bon ! |
Shoyu (Japanese soy sauce) results from at least two fermentations (three for saishikomi). 1) Solid-state fermentation (koji): Cooked soybeans and wheat are inoculated with a mold (Aspergillus oryzae or A. sojae) to produce koji. This koji is not just a source of enzymes; it is a living microcosm that also contains other microorganisms that develop during fermentation (yeasts, bacteria, etc.). 2) Liquid fermentation (moromi): This koji is then submerged in a brine where it ferments for a long period, from 3 to 12 months or more.When rice koji is added to an already-fermented shoyu, the result is shoyu-koji. The koji brings a large amount of active enzymes that restart the maturation process: they further break down the proteins, sugars, and even some lipids present in the shoyu. It also introduces a new fermentative force, because the entire microbiome of the koji is added along with it. However, the high salt content of shoyu prevents most of these microorganisms from multiplying, so at this stage it is mainly the enzymes from the koji that transform the shoyu. These enzymes release significant amounts of glutamate, responsible for the sensation of umami, as well as other aromatic compounds that round out and enrich the sauce.That’s why it tastes so good! |
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