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There is always more to know about food.

Quinnoa is a place to discover everyday foods and understand more about what lies behind them.

Meat Cooking & food science
Chicken releases water when cooking: causes and how to reduce it

Raw chicken is naturally water-rich: USDA references put white meat with skin at about 69% water before cooking and 61%…

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Meat, fish, fruit, cheese, legumes, oils and much more. Discover the stories, qualities and characteristics behind each group of foods.

Food basicsGeneral food questions and everyday fundamentals. MeatCuts, quality, storage and cooking. Fish & seafoodSpecies, freshness, safety and cooking. EggsFreshness, labeling, nutrition and cooking. Dairy & cheeseMilk, yogurt, cheese, quality and storage. Legumes & soyBeans, lentils, soy, soaking and cooking. Nuts & seedsNuts, seeds, nutrition and storage. Grains & pseudocerealsRice, oats, quinoa, bread, pasta and flour. TubersPotatoes, sweet potatoes, storage and cooking. Vegetables & mushroomsFreshness, seasonality, mushrooms and cooking. FruitRipeness, seasonality, storage and quality. Oils & fatsOlive oil, fats, quality and culinary uses. DrinksWater, coffee, tea, infusions and more. Chocolate, cocoa & sweetsChocolate, cocoa, ingredients and quality. Fermented foodsFermentation, production, storage and use. Seaweed, spices & moreSeaweed, spices, condiments and other foods.
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Explore the articles by topic and follow the perspective that interests you most.

Nutrition & compositionProtein, fats, carbohydrates, fiber, calories, vitamins and minerals with useful context. Rankings & best sourcesPractical rankings that compare foods using a clear nutritional or quality criterion. ComparisonsSide-by-side differences between foods, varieties, formats and cooking methods. Food safetyHow to judge food safety, reduce risk and know when food should be discarded. Storage & shelf lifeHow long food keeps and the best way to store it in the fridge, pantry or containers. Freezing & thawingWhat can be frozen, how long it keeps and how to thaw it safely. Cooking & food scienceWhat happens inside food when it is heated, mixed or transformed during cooking. Preparation & cooking techniquesMethods, temperatures and techniques for more reliable cooking results. Health & everyday consumptionHow different foods fit into everyday eating patterns and regular consumption. Nutrition conceptsClear explanations of protein, fiber, energy density and other nutrition fundamentals. Myths & common questionsDirect answers to common questions and popular claims about food and nutrition. Processing & productionHow food is produced, processed, fermented, cured and manufactured. Buying, quality & ripenessHow to choose food, recognize quality, understand ripeness and read useful signals. Food labels & ingredientsCómo interpretar listas de ingredientes, aditivos, denominaciones y términos de etiqueta para entender qué contiene un alimento y para qué sirve cada componente.
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Food information you can trace and understand

We start with a specific question, prioritize official and specialist sources, and add the practical context needed to understand what the data actually means. Key sources are shown in each article.

Read our editorial methodology
Traceable sourcesPrimary, official and specialist references whenever they are available.
Useful contextWe explain limits, comparisons and the conditions that can change a result.
Corrections over volumeWhen something needs clarification or updating, we improve the existing page.
Discover

Five articles worth reading

Nuts & seedsFood safety
Should peanut butter be refrigerated after opening?

Conventional peanut butter is often pantry-stable after opening, while natural or specialty products may call for refrigeration. The label is the final guide.
Vegetables & mushroomsFood safety
Cut Cabbage Turning Black at the Edges: Why It Happens
FruitFood safety
Pear is brown inside: when it is overripe and when it is spoiled
Vegetables & mushroomsFood safety
Eggplant Full of Dark Seeds: What It Means and Whether It’s Safe to Eat
Legumes & soyFood safety
How long do cooked lentils last in the fridge?
New reads

Latest articles

Processing & production

Powdered and Microcrystalline Cellulose: What They Are and Why They Appear in Food

Powdered cellulose and microcrystalline cellulose are purified forms of cellulose, the major structural polysaccharide in plant cell walls. Powdered cellulose is produced mainly through fine mechanical pulverization of purified cellulose, while microcrystalline cellulose receives partial hydrolysis that removes more amorphous regions. Both are used for physical functionality such as anticaking, stabilization, bulking, and texture rather than sweetness.

4 min read
Tubers · Comparisons

Soluble Tapioca Fiber: What It Is and How It Differs From Tapioca Starch

Soluble tapioca fiber is not simply tapioca starch under another name. It is commonly a resistant dextrin manufactured from cassava starch through hydrolysis and rearrangement of glucose linkages so that much of the material resists digestive enzymes. Conventional tapioca starch, by contrast, gelatinizes when heated and is largely digested to glucose. The difference is the structure created during processing.

4 min read
Grains & pseudocereals · Comparisons

Oat Fiber: What It Is and Why It Is Not the Same as Oat Bran or Oat Flour

The oat fiber listed in high-fiber foods is commonly oat-hull fiber rather than oat flour or bran. FDA describes oat hull fiber as isolated from the outer hull removed from the edible oat groat and generally containing at least about 85% nondigestible carbohydrate, mostly insoluble cellulose and hemicellulose. This makes it very different from bran or flour, which still contain substantial starch, protein, and beta-glucan.

4 min read
Fruit · Nutrition concepts

Citrus Fiber: What It Is, Where It Comes From, and Why It Is Used in So Many Foods

Citrus fiber is an ingredient made mainly from the peel, albedo, and pulp left after citrus juice processing. Washing, drying, and milling produce a dietary-fiber-rich material containing pectin, cellulose, and hemicellulose in varying proportions. Its value is not only nutritional: citrus fiber can bind substantial water and oil, increase viscosity, and stabilize food structures, which is why it appears across many product categories.

4 min read
Processing & production

Glycerol or Glycerin in Food: What It Is and Why It Is Used as a Humectant

Glycerol and glycerin are two names for the same compound. It is a small three-carbon molecule that occurs naturally as the backbone of triglycerides in fats and oils. In foods it is especially useful because it is hygroscopic, meaning it attracts and holds water. This helps keep baked goods, bars, fillings, and confectionery soft. It can also function as a solvent, carrier, stabilizer, and nutritive sweetener.

4 min read