Miso is made by fermenting soybeans with salt and a grain-based koji (commonly rice or brown rice). The fermentation produces a savory paste used as an ingredient in cooking or as a ready-to-use condiment.
Aging varies by style: for example, some white/shiro miso is aged about three months and stays mild, while red/aka miso is often aged longer (around six months or more). In general, longer aging darkens the paste and intensifies the flavor, producing a stronger, more savory profile.
Shoppers report using miso for miso soup, marinades (especially for fish), glazes and sautés, ramen, pickles, salad dressings, dips and spreads, sauces, stocks, and noodle bowls.
Most descriptions note soy as an ingredient and allergen. Many listings also highlight diet or certification notes such as gluten-free, vegan suitability, non-GMO, organic certification, and kosher/parve labeling where applicable.
Packaging varies from resealable pouches and tubs for convenient storage to multi-packs and cases for resale. Listings frequently show single units as well as packs of 6 or 12, and larger cases (e.g., cases of 10) for bulk purchase.
Miso is best added toward the end of cooking—stir it into long-simmered dishes off the heat or just before serving. Avoid boiling the miso after adding it to preserve its delicate flavor and any live cultures.