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“There’s a whole of world miso to explore - find your favourite! That’s what I do… “ Tim Anderson.
Miso is a fermented soybean paste that's been part of Japanese cooking for well over a thousand years. It's salty, savoury and deeply fragrant. It’s also packed with the kind of rich umami that makes everything it touches taste more like itself. A spoonful stirred into a broth rounds out every flavour in the pot. A smear across salmon before grilling builds a sticky, caramelised crust. Mixed into a salad dressing, it adds a savoury depth you can't get from salt alone.
It's one of the most versatile ingredients you'll find in a Japanese store cupboard, and it earns that reputation quickly once you start cooking with it.
What does miso taste like?
The simplest explanation is that it is savoury, salty and complex, with a warmth that lingers on the palate. But miso's flavour changes dramatically depending on how it's made and how long it's fermented.
At the lighter end, white miso (shiro miso) tastes mild and gently sweet. It’s almost creamy, with a subtle nuttiness. You could spread it on toast and enjoy it straight. At the other end, a long-aged red miso (aka miso) hits with a rich, almost beefy intensity. Salty, earthy and deeply savoury, with a fermented tang that fills the mouth.
Between those two sits a whole range of flavours. Some lean fruity. Some smell faintly of roasted grain. Others carry a musky sweetness like dark caramel. The only real way to learn is to taste a few side by side. Open the pot, take a small dab on your fingertip and let it dissolve on your tongue. You'll notice the differences immediately.
Watch our video with Tim Anderson, where he explains the differences between different styles of miso, or read on to find out.
What is miso made of?
Miso is made from four ingredients: soybeans, salt, water and koji. Koji is a mould (Aspergillus oryzae) that's also the starter behind soy sauce, rice vinegar and sake.
To make miso, koji is first grown on a grain, usually rice or barley, sometimes soybeans alone. This koji starter is mixed with steamed soybeans, sea salt and spring water, then packed into wooden barrels and left to ferment. The length of that fermentation is what separates a gentle three-month white miso from a bold two-year red. The grain also contributes with rice koji tending to produce a sweeter, more delicate paste, while barley koji gives an earthier, fuller body.
That's what makes miso paste so varied despite such simple raw materials. Just four ingredients, but countless results.
Where does miso come from?
The earliest records of miso in Japan appear during the Yayoi period (300 BC–300 AD), when people fermented fish and meat with salt to preserve food through warmer months. Over centuries, makers refined the technique, swapping in soybeans, experimenting with different grains and fermentation times, until miso became the paste we know today. Japan remains the heartland, and every region has its own preferred style.
Types of miso – white, yellow and red
You'll most often see miso described by colour: white, yellow or red. The colour tells you roughly how long the paste has fermented, and fermentation time shapes both flavour and intensity. Lighter, younger miso tastes sweeter and more delicate. Darker, longer-aged miso gets richer and saltier.
But colour is a guide. A 'white' miso can look pale gold, and a 'red' can range from russet to nearly black. What matters is how it tastes and how you plan to use it.
White miso (shiro miso)
Fermented for as little as three months with a higher proportion of koji, white miso is the mildest variety. It tastes gently sweet and slightly nutty, with a smooth, almost velvety texture. It works well in light dressings, creamy sauces, soups and baking. Essentially, anywhere you want umami without heaviness. If you're trying miso for the first time, start here.
Yellow miso (shinshu miso)
Yellow miso ferments for longer, typically six months to a year. It is often made with barley or a mix of barley and rice. The flavour is stronger and more rustic: saltier, with a rounder, earthier character than white. It's the workhorse miso, good in soups, stir-fries, stews and marinades. Many Japanese households keep a tub of this as their everyday paste.
Red miso (aka miso)
Red miso ferments the longest, sometimes for more than two years. It's made with a higher proportion of soybeans and often barley koji, producing a dark, intensely savoury paste with a powerful, almost meaty umami. The flavour is bold and salty, with a depth that suits rich dishes: hearty stews, braised meat, robust sauces and even dark chocolate or caramel desserts. This is the miso traditionally used in miso soup, though you can make miso soup with any variety.
Awase miso (mixed miso)
Awase means 'combined,' and awase miso is a blend of two or more types, but usually white and red. The result sits in the middle: a balanced, bronze-coloured paste with both the sweetness of shiro and the depth of aka. Chef Tim Anderson recommends awase as a good general-purpose miso, and it's a sensible choice if you want a single pot that handles most dishes well.
| Type | Fermentation | Flavour | Best for |
|---|---|---|---|
| White (shiro) | 1-3 months | Mild, sweet, nutty | Dressing, baking, light sauces |
| Yellow (shinshu) | 6-12 months | Earthy, balanced, savoury | Soups, stir-fries, marinades |
| Red (aka) | 1-2+ years | Bold, salty, meaty | Stews, braised dishes, rich sauces |
| Awase (mixed) | Varies | Balanced, versatile | All-purpose cooking |
Each type suits different dishes, but there are no hard rules. Taste as you go, start with less than you think you need and add more. A little miso goes a long way.
Get to know your miso better! Take a deeper dive into the different types miso.
How to use miso paste
Miso soup gets all the attention, and rightly so. A bowl of broth with silken tofu and wakame, finished with a spoonful of miso dissolved at the last moment, is one of cooking's simplest pleasures. But miso paste does far more than soup.
In soups and broths
Stir a spoonful or two into any soup or casserole, not just Japanese ones. It deepens and rounds the flavour the way a stock cube tries to but never quite manages. Add it at the end of cooking because miso loses its aroma if you boil it. See our miso soup recipe for a simple starting point, or pick up a miso soup kit with everything you need in one box.
In marinades and glazes
Mix miso with a splash of mirin and a little oil for a quick marinade that caramelises beautifully under a grill. It works with salmon, chicken thighs, aubergine, even lamb chops. The enzymes in miso also help tenderise meat, so a few hours in a miso marinade gives you both flavour and texture. For vegetarian dishes, miso adds a savoury richness that makes vegetables feel more substantial. Try it on roasted cauliflower or grilled courgettes.
In dressings, sauces and dips
Whisk white miso into a vinaigrette for a savoury tang that lifts any salad. Stir it into mayonnaise for a quick miso mayo that is brilliant with chips, in a sandwich or alongside grilled fish. Blend it into pesto in place of parmesan; you get the same salty, fermented depth, and the pesto becomes vegan in the process.
In baking and desserts
This is where miso surprises people. A tablespoon of white miso folded into a brownie batter adds a salty-sweet depth that makes the chocolate taste richer and more complex. Replace the salt in a caramel sauce with a spoonful of dark miso and the result is extraordinary: smoky, deep and impossible to stop eating. Tim Anderson suggests reaching for a long-aged aka miso for toffee and caramel desserts in particular.
Tim Anderson's tips for cooking with miso
Chef Tim Anderson, Masterchef winner, food writer and author of Tokyo Stories and Vegan JapanEasy, gave us his top advice for getting the most from miso. You can also watch him talk through different miso styles in our video.
Use miso anywhere you'd use salt. That's Tim's core principle. It works in sweet dishes just as well as savoury ones. Stir a little into cookie dough, or dissolve some in the butter for a compound butter that lifts grilled steak.
Always taste miso on its own first. When you open a new pot, take a small dab straight from the container before you cook with it. Every miso tastes different, even within the same type, so this quick check tells you how salty it is and how much to use.
Find your everyday miso, then branch out. Tim recommends starting with a good awase (mixed barley and rice) miso for general cooking. Once you know that one well, try a darker aka miso for richer dishes and a lighter shiro for dressings and baking. Three pots in the fridge covers almost everything.
How to store miso
Miso keeps well. Unopened, it's stable at room temperature in a cool, dark cupboard. Once you've opened it, pop it in the fridge with the lid firmly sealed. It'll stay good for up to a year, sometimes longer. The colour may darken slightly over time, but that's a natural part of continued fermentation, not a sign of spoilage. If you see any surface discolouration, scrape it off; the paste underneath will be fine.