Fenugreek

Health Benefits

The old record — horopa (葫蘆巴). The Donguibogam lists the seed in its Herb section as 葫蘆巴. It records a warm nature, a bitter taste and no toxicity. It carries a view that the seed is that of a radish from the southern lands, and notes that it was washed in liquor and lightly toasted before use. What an old medical text wrote differs from how it is judged today.

Sotolon and aroma. Flavour analysis attributes the characteristic sweet aroma of fenugreek to sotolon, a compound detectable at very low concentrations; the same class appears in artificial maple flavouring. This is an analysis of aroma.

The smell that carries over. Repeated reports describe sweat and urine smelling of maple syrup after a large intake of fenugreek. Cases are on record where the smell was noticed in a breastfeeding person and mistaken for another cause. This is an observation about smell.

Nutrition

• Sotolon (the aroma of the toasted seed) — the compound behind the maple-syrup scent
• Galactomannan (abundant in the seed endosperm) — a polysaccharide that thickens on contact with water
• Diosgenin (reported in the seed) — the backbone of the steroidal saponins isolated from fenugreek
• Protein (present as in other legume seeds) — the storage component of the seed

What the maple aroma is The sweet aroma of toasted fenugreek comes from sotolon. It is powerful at very low concentrations, so a small amount shifts the aroma of a whole blend. Burnt, the bitterness rises sharply, so toast only until the colour barely changes.

It thickens in water The seed is rich in a polysaccharide called galactomannan, so ground and mixed with water it thickens. Indian doughs and sauces use that property directly. Simmered whole and long, it makes the liquid slippery.

Bitterness The bitterness of fenugreek is discussed in connection with its saponin compounds. Soaking overnight softens both the bitterness and the seed itself, which makes grinding easier. Throw the soaking water away.

The distance between research and food Human studies on fenugreek continue, but they mostly use measured doses of extract or powder, a different setting from the few pinches that go into cooking. This entry stays with the compositional record.

Pairings

○ Toasted with cumin and coriander — Bloom it in oil with cumin and coriander before the main ingredients go in. Add the fenugreek last and move on as soon as the colour shifts.

○ Potato and lentils — In Indian braises fenugreek goes with mild ingredients such as potato or lentils. The aroma is strong, so keep the amount small enough not to bury them. Potato

○ Yoghurt — Toasted and finely ground, stirred into yoghurt a little at a time, it blends readily and thickens thanks to the galactomannan. Let it stand a moment before tasting.

△ Peanut and chickpea allergy — Fenugreek is a legume, and cross-reactions have been reported in people allergic to peanut or chickpea. Start with a very small amount the first time, and if you have ever reacted, check spice blend labels. Peanut

△ More than a culinary amount during pregnancy — During pregnancy, do not exceed the amount that goes into cooking as a spice. Avoid taking spoonfuls of ground seed daily or using it in extract form. The same applies while breastfeeding.

△ If you are on medication — Fenugreek is a material with ongoing research on blood sugar and blood clotting. If you take related medication, speak to a clinician before eating more than culinary amounts regularly, and tell your surgical team in advance of an operation.

Varieties

• Seed lines (seed) — Grown on to fill and dry pods. This is the seed sold as spice
• Leaf lines (methi) (seed) — Grown for the leaf, treated as a vegetable in India
• Grown as sprouts (seed) — Not a cultivar distinction but a method. Spice seed sown as it comes and cut as sprouts within days