Nutritional Yeast
Also called nooch, yeast flakes
Flakes of deactivated yeast, grown and then dried. They taste savory, nutty and somewhat cheesy, and cooks use them to add umami without any dairy.
Nutritional yeast, nicknamed nooch, is a type of yeast grown on a sugary feed such as molasses, then heated so it is no longer active, and dried into golden flakes or powder. It tastes savoury, nutty and gently cheesy, with a warm, earthy, slightly brothy depth.
Cooks love it as a dairy-free shortcut to cheesy umami. Sprinkle it on popcorn, pasta or roasted vegetables, stir it into tofu scrambles, or blend it with cashews into a creamy sauce. It adds flavour without fat or meltiness.
Flavor profile
Aroma: cheesy, nutty, savory
Good to know
Origin: Global
Forms: flakes, powder
Season: Available year-round; a dried pantry ingredient with no season.
Nutrition: A source of protein and, when fortified, B vitamins; check the label, as fortification varies by brand.
Storage: Store nutritional yeast in an airtight container in a cool, dark, dry cupboard. It keeps its best flavour for about a year, and up to two years in the fridge or freezer, where the cold also slows any fading of added vitamins. Moisture is the main enemy: clumps, a stale or bitter smell, or any dampness mean it is past its best. Always use a dry spoon.
How to use nutritional yeast
Sprinkle at the End
Stir or sprinkle it on right before serving so you can taste and adjust. It works on popcorn, pasta and roasted vegetables.
Build a Sauce
Blend it with soaked cashews, lemon juice, garlic and a little mustard for a creamy, cheesy-tasting sauce.
The science of nutritional yeast
- When the yeast is heated and dried, its cells break open and enzymes release glutamic acid and other amino acids from yeast proteins. Free glutamate is what gives nooch its strong umami, similar to aged cheese.
- The yeast also contains nucleotides such as guanylate. These work together with glutamate to amplify umami, which is why a small amount makes sauces taste much fuller.
- Toasty, nutty and cheesy notes come from Maillard reactions during drying, when the yeast's sugars and amino acids brown together.
- Because the yeast is deactivated, it will not make dough rise or ferment anything. It behaves like a seasoning, not a leavening agent.
- Nooch adds flavour but not stretch or melt. Cheese melts because its casein proteins and fat soften with heat; nutritional yeast has neither, so creamy vegan sauces rely on cashews, starch or oil for body.
How to choose nutritional yeast
Look for bright yellow, fluffy flakes with a pleasant nutty smell; flakes are best for sprinkling, powder for smooth sauces. Many brands are fortified with B vitamins, and the label will say so. Check that it is labelled gluten-free if needed, as some are processed alongside grains.
Substitutes for nutritional yeast
| Swap | Amount | What changes |
|---|---|---|
| Grated parmesan | 1:1 | Closest cheesy-umami hit, though not dairy-free and it melts. |
| White miso | 1 tsp per 1 tbsp nooch | Adds savoury depth to sauces and dressings; saltier and wetter. |
| Ground toasted cashews + a pinch of salt | 1:1 | Gives a nutty, rich note for sprinkling on pasta or salads. |
| Mushroom powder | use half as much | Earthy umami, especially good in gravies and soups. |
What goes with nutritional yeast
- Pasta. Nutritional yeast gives plain pasta a cheesy, savory dusting.
- Potato. Nutritional yeast adds a savory, cheesy coating to roasted potatoes and fries.
- Cashew. Cashews blend into a creamy base that nutritional yeast turns cheesy.
- Tofu. Nutritional yeast adds a savory, eggy-cheesy flavor to tofu scrambles.
- Garlic. Garlic's bite sharpens nutritional yeast's savory flavor.
- Mushroom. Mushrooms and nutritional yeast stack up their savory flavors.
- Kale. Nutritional yeast coats kale chips with a savory, cheesy crunch.
- Broccoli. Nutritional yeast adds savory depth to roasted broccoli.
- Cauliflower. Roasted cauliflower takes on nutritional yeast's cheesy, savory flavor.
- Miso. Miso and nutritional yeast stack up savory depth in vegan sauces.
Mistakes to avoid
- Adding too much at once, which can turn dishes bitter or yeasty.
- Expecting it to melt or stretch like cheese. It adds flavor, not texture.
Ideas for tonight
- Cashew and nutritional yeast mac
- Tofu scramble with turmeric and yeast flakes
- Roasted potatoes tossed with nutritional yeast and garlic
Nutritional Yeast: questions
What does nutritional yeast taste like?
It tastes savoury, nutty and mildly cheesy, a bit like a cross between parmesan and toasted nuts with a brothy finish. Too much can taste bitter or yeasty, so start with a tablespoon.
Is nutritional yeast the same as brewer's yeast or baker's yeast?
No. Baker's yeast is alive and makes bread rise. Brewer's yeast is a bitter by-product of beer making. Nutritional yeast is grown specifically as a food and deactivated, so it tastes pleasant and does not leaven.
Does nutritional yeast melt like cheese?
No. It has no casein or fat, so it will not melt or stretch. It dissolves into sauces to add flavour, while ingredients like cashews, potatoes or starch provide the creamy body.
How do I use nutritional yeast?
Sprinkle it on popcorn, pasta, salads and roasted vegetables, stir it into soups and gravies, or blend it with soaked cashews, lemon, garlic and mustard for a dairy-free cheese sauce.
Does nutritional yeast go bad?
It keeps for a long time when dry. If it smells stale or bitter, has clumped from moisture, or shows any mould, replace it.
Should you cook nutritional yeast?
You can, but its flavour is brightest when added near the end. Long, high heat can turn it slightly bitter, so stir it in off the heat or sprinkle it on just before serving.
What goes well with nutritional yeast?
Nutritional Yeast pairs best with pasta, potato, cashew, tofu, garlic. Nutritional yeast gives plain pasta a cheesy, savory dusting.
How do you use nutritional yeast in cooking?
Sprinkle at the End: stir or sprinkle it on right before serving so you can taste and adjust. It works on popcorn, pasta and roasted vegetables.
How should you store nutritional yeast?
Store in an airtight container in a cool, dark cupboard.
What is the most common mistake with nutritional yeast?
Adding too much at once, which can turn dishes bitter or yeasty.
Cashew
Tofu
Pasta
Potato
Garlic
Miso
Kale
Parmesan