Amaranth

Amaranth (Amaranthus)

Amaranth is a pseudo-grain — the seed of a broadleaf plant that does not belong to the grass (cereal) family but is used like one. (In Hebrew it is spelled two ways, “אמרנת” and “אמרנט”.) It originates in Central America, where it was a staple food of the Aztecs alongside corn and beans. It is naturally gluten-free, and it stands out for two things that are almost absent from grains: lysine and an unusually large amount of calcium.

The seeds are tiny — about a million seeds per kilogram — and they cook into a porridge-like, sticky texture, unlike quinoa, which stays separate.

Nutrition facts

Note the difference between the columns: amaranth absorbs a lot of water when cooked, so the numbers per 100 grams cooked look modest. A practical serving is about 50 grams dry — and that provides about 7 grams of protein, 124 mg of magnesium and 3.8 mg of iron.

Lysine — what makes it unusual

Almost all grains — wheat, rice, corn — are low in the amino acid lysine. It is their “limiting amino acid”, meaning the one that limits the body’s ability to use all the rest. Culinary traditions around the world solved this intuitively by pairing a grain with a legume: rice and lentils, corn and beans, hummus and pita.

Amaranth needs no such complement: it is rich in lysine and its amino acid profile is complete. That is why it is described as a “complete protein”, a property it shares with quinoa and buckwheat but not with true grains.

Amaranth vs. quinoa

The bottom line: quinoa wins slightly on protein and fiber, and mainly on culinary versatility. Amaranth wins on calcium (almost three times as much) and iron, and its texture suits porridges and baked goods but not salads.

Benefits

• Complete protein that is gluten-free: suitable for celiac disease and gluten sensitivity, with a complete amino acid profile — a rare combination.
• Calcium unusual for a plant food: 159 mg per 100 grams dry, several times more than most grains. Especially relevant in a vegan diet.
• Magnesium and iron in large amounts.
• Squalene: amaranth oil contains an unusually high concentration of squalene (about 6%-8%) — a compound usually found in shark liver oil and olive oil. It is being studied in relation to blood lipid profiles and skin health, but the evidence is still preliminary.
• Fiber and beta-glucans: contribute to satiety and blood sugar regulation.
• It pops like popcorn — amaranth popcorn is a whole-grain snack that is low in calories and quick to make.

Downsides and warnings

• Phytic acid: amaranth is rich in it, and it binds iron, zinc and calcium and reduces their absorption. This is a significant caveat precisely because these minerals are its main advantage. Soaking for 8 hours, sprouting or fermenting reduces it significantly — and so actually improves what the body takes in.
• Oxalates: amaranth leaves (eaten as a vegetable in many cuisines) are rich in oxalates, which is relevant for people prone to kidney stones. The amount in the seeds is much lower.
• Saponins: in the seed coat, in much smaller amounts than in quinoa. Rinsing under running water removes most of them.
• A sticky texture that is not for everyone. Amaranth cooked on its own tends toward a slimy texture. The usual solution is to mix it with another grain in a 1:3 ratio, or to use it deliberately as a porridge rather than as a rice substitute.
• An earthy, slightly peppery flavor with mild bitterness, more pronounced than quinoa. Lightly toasting the seeds in a dry pan before cooking softens it and brings out a nutty aroma.
• Availability and price: less common than quinoa and sometimes more expensive.

Practical use

• Cooking: a ratio of one cup of amaranth to 2.5-3 cups of water, about 20 minutes until fully absorbed.
• Soak in advance for 8 hours — reduces phytic acid and shortens cooking time.
• Toast before cooking in a dry pan — significantly improves the flavor.
• As a breakfast porridge with milk or a plant-based drink, cinnamon and fruit — the most natural use for its texture.
• In a mix with rice or quinoa in a 1:3 ratio, if you want a separate texture.
• As a thickener for soups and stews — one tablespoon replaces flour.
• Amaranth popcorn: a very hot dry pan, one tablespoon of seeds at a time, covered — 15-20 seconds.
• Combine with vitamin C to improve absorption of non-heme iron.

Summary

Amaranth is a gluten-free pseudo-grain with complete protein, the lysine that true grains lack, and an unusual amount of calcium and iron for a plant food. Two practical things change the outcome more than anything else: soak it — otherwise the phytic acid blocks exactly the minerals we chose it for — and toast it lightly before cooking, which turns the earthy flavor nutty. If you are looking for a separate, grainy rice substitute, quinoa will suit you better; for porridges, baked goods and boosting calcium — amaranth is the better choice.