National Dish Ethiopia: Siljo (Recipe)
In this article
Siljo is one of the strangest and most striking things in Ethiopian cooking: ground flaxseed and mustard powder mixed with water and berbere, then left to ferment for several days until it turns sharply sour and fiercely pungent. It is eaten in very small quantities on injera, and a little goes a very long way.
About Siljo
Siljo is a fermented condiment of flaxseed and mustard that brings heat and pungency to the injera platter. Ground flaxseed is mixed with water, mustard powder and berbere into a paste and fermented over several days, producing an intensely savoury, gently sour sauce. Siljo is traditionally served in small quantities. It is a seasoning rather than a dish, and it is particularly associated with fasting periods.
Ingredients (serves 1–2)
- 50 g flaxseed, ground (telba)
- 1 tablespoon mustard powder
- 200 ml water
- 1 teaspoon berbere spice blend
- A pinch of salt
- Injera, to serve
Shopping for the ingredients
Grind the flaxseed yourself just before using, ground flaxseed goes rancid within weeks, and rancid seed ruins the ferment. English mustard powder works perfectly for the senafich. Buy berbere from an Ethiopian grocer if you can; the difference in aroma from a generic blend is substantial.
Preparing the dish
Grind the flaxseed to a fine meal in a spice grinder. Use a clean glass or ceramic jar for the fermentation, and cover it with a cloth rather than sealing it. This is an open ferment that relies on wild organisms and needs to breathe.
Step-by-step instructions
- Grind the flaxseed finely.
- Whisk it with the water into a smooth, loose paste with no lumps.
- Stir in the mustard powder, berbere and salt.
- Transfer to a clean jar and cover with a cloth.
- Leave at room temperature for 3–5 days, stirring once a day.
- It is ready when it smells sharply sour and pungent and has thickened.
- Taste and adjust with more salt or berbere.
- Serve in a small dish alongside injera; it keeps a week in the fridge.
Gluten-free / lactose-free version
Siljo is naturally gluten-free and lactose-free, seed, spice and water. The only caveat is the injera served with it, since commercial injera is often cut with wheat or barley; pure teff injera keeps the whole plate gluten-free.
Tips for vegans and vegetarians
Siljo is vegan by nature and is specifically a fasting food, made during the Orthodox periods when no animal products are permitted. Flaxseed provides both protein and omega-3, which is part of why it earned its place in the fasting repertoire.
More tips and tricks
Grind the flaxseed fresh, since the whole ferment tastes of whatever the seed tastes of. Stir daily to keep the surface from drying and to distribute the active culture. And taste as it goes, three days gives something mild, five days something genuinely fierce. If it ever smells wrong rather than sour, discard it and start again.
Adapting the recipe to your taste
More mustard powder makes it sharper and more nose-clearing, which is the point for many Ethiopians. Garlic or ginger added to the paste deepens it. A little oil stirred in at the end softens the texture.
Ingredient substitutions
Whole mustard seeds, ground, can replace the powder. Mitmita, the hotter Ethiopian chilli blend, can stand in for berbere. Ground sunflower seed substitutes for part of the flaxseed for a milder version.
Drink pairing ideas
Water is genuinely the best thing alongside siljo, since it is so pungent. Ethiopian coffee follows the meal as always. Tella, the local barley beer, is what it is drunk with at home.
Serving and presentation ideas
Serve siljo in a small bowl or as a modest spoonful on the injera platter, never as a main component. It is there to be picked up in small amounts with a torn piece of bread. Its dark, coarse appearance is entirely characteristic and should not be smoothed out.
A bit of history
Fermented condiments run through Ethiopian cooking, from awaze to datta, and siljo is among the oldest and most distinctive. Flaxseed (telba) is an important crop on the highland plateau and appears in drinks, breads and sauces. The dish is closely associated with the long fasting seasons, when strong flavours compensated for the absence of meat and dairy. It offers a genuine window onto Ethiopian cuisine.
More recipe ideas
Summary: Siljo
Siljo is ground flaxseed and mustard fermented with berbere for several days into a sharp, pungent Ethiopian condiment. Grind the seed fresh, stir it daily, and serve it in very small amounts.
