Buckwheat Groats

Food · Grain · Food, Typed Supps

A gluten-free seed cooked like rice, with more magnesium and protein than most grains.

Stage by stage

Intake (Cooking and chewing): Cooking hydrates the groat and gelatinises its starch so it can be digested.
Stomach and gut (Starch digestion): Amylase breaks the gelatinised starch down, slowed by the intact groat structure.
Small intestine (Absorption): Glucose and magnesium absorb well; the non-heme iron absorbs modestly against phytate.
Large intestine (Fermentation): Fibre and resistant starch are fermented by gut bacteria into short-chain fatty acids.

Time to effect

1–2 hours: A flatter blood glucose curve than refined grains over the hour or two after eating.

Allergens

None of the fourteen major allergens. Derived from what this food is, not from a product label.

Eating patterns

Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Low-FODMAP, Gluten-free.

Satiety

128 on the satiety index, where white bread is 100 — moderate. Modelled from the Holt et al. (1995) measurements.

Environmental footprint

1.6 kg CO2e and 648 litres of freshwater per kg, matched to "Wheat & rye" in Poore & Nemecek (2018), Science 360.

Cost band

Mid — roughly £7 per kg, as a band midpoint rather than a price.

Key nutrients

Magnesium
Plant protein with lysine
Fibre
Rutin

Nutrition per 100g

Calories: 326
Protein: 12.8g
Carbohydrate: 58g
of which sugars: 1.4g
Fat: 3.2g
of which saturated: 0.6g
Fibre: 5g
Sodium: 1mg

Food vs. supplement

Rutin supplements deliver far more of that flavonoid than any serve of buckwheat, on weak evidence. The food's dependable contributions are magnesium, fibre and lysine-containing plant protein.

Kitchen tip

Use toasted groats (kasha) if you want separate grains, about 1.5 parts water to 1 part buckwheat, and rest it off the heat rather than boiling hard.

Common myth

"Buckwheat is a type of wheat, so it contains gluten." In reality: It is not a wheat or even a grass — it is a seed related to rhubarb, and contains no gluten. The practical caution runs the other way: soba noodles and buckwheat flour blends are often mostly wheat flour.