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Nutrition concepts

Clear explanations of nutrition concepts such as protein, fiber, glycemic response, energy density and nutrient quality.

Grains & pseudocereals · Cooking & food science

Polenta: What It Is, What It Is Made From, and How It Differs From Cornmeal

Polenta is a preparation: a thick porridge made by cooking ground grain in water. Today the word usually means medium- or coarse-ground yellow or white corn. A package labeled “polenta” may therefore be ordinary cornmeal milled to a useful particle size for the dish. The meaningful differences are usually grind size, whether germ and bran remain, and whether the product was precooked.

4 min read
Meat · Nutrition concepts

Beef Tallow: What It Is and Why It Has Become Popular Again

Beef tallow is rendered beef fat: fatty tissue is gently heated so the fat melts, then water, proteins, and solids are filtered away. It is useful for frying, roasting, and adding savory flavor. Its 2025–2026 resurgence has been driven by nostalgia, social media, traditional-food messaging, and anti-seed-oil campaigns. That popularity does not make tallow nutritionally superior; it remains 100% fat with a substantial saturated-fat fraction.

4 min read
Drinks · Comparisons

Protein Water: What It Is and How It Differs From a Protein Shake

Protein water is a clear or nearly clear beverage containing dissolved protein, most commonly whey protein isolate, although hydrolysates, collagen, and plant proteins also appear. Clear whey formulations are usually acidic because whey isolate can remain highly soluble and optically clear at low pH. A bottle can provide meaningful protein with very little fat or carbohydrate, but the exact nutrition varies by formula.

4 min read
Drinks · Health & everyday consumption

Pickle Juice: Sodium, Electrolytes, and When It Might Make Sense

Pickle juice is concentrated brine, and sodium is usually its dominant electrolyte. A few sips can provide a substantial amount, while potassium is generally much lower than in a deliberately formulated sports drink. Cramp studies suggest small amounts can relieve some episodes quickly, but the effect occurs too fast to be explained by changing blood sodium and likely involves a neural reflex from the mouth and throat.

4 min read
Vegetables & mushrooms · Nutrition concepts

Chicory Root: What It Is, Why It Contains Inulin, and Why It Appears in So Many Foods

Chicory root, Cichorium intybus, stores much of its carbohydrate as inulin, a family of fructans that humans do not digest in the small intestine. That makes the root an efficient raw material for extracting inulin and oligofructose. Food manufacturers use these fibers to add fiber, body, mild sweetness, sugar or fat replacement, and a fermentable substrate for the gut microbiota.

4 min read
Drinks · Nutrition concepts

Does Kombucha Have Probiotics? What Being Fermented Really Means

Kombucha can contain live bacteria and yeasts when it is raw and unpasteurized, but live microbes alone do not meet the scientific definition of a probiotic. A probiotic must be sufficiently identified, delivered alive at an adequate amount, and supported by evidence for a health benefit. Traditional kombucha communities vary from batch to batch and usually do not meet all of those criteria.

4 min read
Drinks · Comparisons

Prebiotic Soda: What It Is, What Fiber It Contains, and How It Differs From Regular Soda

A prebiotic soda is a carbonated beverage with an added fermentable substrate—often chicory inulin or oligofructose, although other fibers are also used—with the aim of adding fiber and supporting selected gut microbes. Many formulas contain less sugar than conventional soda, but there is no standard composition and the word “prebiotic” alone does not establish a benefit.

4 min read
Drinks · Cooking & food science

Protein Coffee or Proffee: What It Is and What Changes When You Add Protein

Protein coffee, or “proffee,” is simply coffee combined with a concentrated protein source such as whey, high-protein milk, plant protein, or a ready-to-drink shake. There is no standard formula. It may add 15–30 g of protein, but it can also add calories, sweeteners, or sugar. Very hot coffee can denature and aggregate whey proteins, causing clumps, without making the protein nutritionally useless.

4 min read
Fish & seafood · Nutrition & composition

Sea Moss: What It Is, What Nutrients It Contains, and Why It Became Popular

“Sea moss” is a market term rather than one standardized species or nutrient profile. It often refers to Irish moss, Chondrus crispus, but other red seaweeds are also sold dried, powdered, encapsulated, or as gel. These seaweeds contain polysaccharides and minerals including iodine, yet concentrations vary greatly. Recent testing of commercial sea moss products also found wide variation in microbial quality and detected selected metals.

4 min read