Soop-e Karafs (سوپ کرفس) — Persian Velvety Celery Soup
A silky Persian celery soup blended with potato for natural creaminess, finished with fresh lemon juice for a bright, clean taste. Simple pantry ingredients become a vibrant, comforting bowl suitable for everyday meals.
Printable Recipe Card
Servings: 4 · Total: 55 min · Difficulty: easy
Ingredients (quick list)
- 30 g Unsalted butter (for sautéing)
- 200 g Yellow onion (finely diced)
- 450 g Celery (strings removed if tough; sliced (include leaves if tender))
- 250 g Potato (peeled and diced (about 1.5 cm))
- 1000 ml Water (plus more as needed to adjust thickness)
- 7 g Sea salt (about 1 1/4 tsp, plus more to taste)
- 1 g Black pepper (about 1/2 tsp, freshly ground)
- 30 ml Lemon juice (freshly squeezed (about 2 tbsp), added off heat)
Steps (summary)
- Prepare the vegetables: dice the onion, slice the celery (include tender leaves), and dice the potato into even 1.5 cm pieces s…
- Melt the butter in a medium pot over medium heat (about 3–4 minutes). Add the diced onion and cook 8–10 minutes, stirring often…
- Add the sliced celery and cook 6–8 minutes over medium heat, stirring, until it begins to soften and smells fresh and herbaceou…
- Stir in the diced potato, then pour in 1000 ml water. Bring to a boil over high heat, about 6–8 minutes. Once boiling, reduce t…
- Turn off the heat. Blend until completely smooth and velvety using an immersion blender in the pot, or carefully transfer to a…
- Season with sea salt and black pepper, then remove from heat and stir in the fresh lemon juice. Taste and adjust: add up to 250…
Cultural Background
Celery soup is a familiar home-cooking soup in Iran, often prepared as a light first course or a soothing meal during cooler months. Its simple vegetable base and lemon finish reflect a broader Persian preference for balancing richness with acidity and freshness.
Equipment
💡 Tips
- For the brightest flavor, add lemon juice off heat; boiling citrus can taste harsh and less fragrant.
- If your celery is very fibrous, peel the outer stalks with a vegetable peeler to remove strings before slicing.
- Blend longer than you think you need—extra blending time is the key to a truly velvety texture without cream.
- For a deeper celery aroma, include a small handful of tender celery leaves, but avoid tough, dark leaves which can be bitter.
⚠️ Common Mistakes
❌ Browning the onions or celery
💡 Why: High heat darkens the soup and adds a toasted flavor that can mask celery’s clean taste.
✅ Fix: Cook on medium to medium-low and stir often; aim for soft and translucent onions, not golden.
❌ Adding lemon juice while the soup is boiling
💡 Why: Prolonged heat can dull citrus aroma and make the acidity taste sharp.
✅ Fix: Turn off the heat first, then stir in lemon juice and taste-adjust at the end.
❌ Under-blending the soup
💡 Why: Celery fibers can leave the texture stringy or grainy even when fully cooked.
✅ Fix: Blend longer, and if needed pass through a fine-mesh sieve; also peel stringy celery stalks before cooking.
❌ Over-salting before blending
💡 Why: Salt perception increases after blending and after lemon is added, making the soup taste too salty.
✅ Fix: Add most salt at the end; start with half, blend, then finish seasoning after lemon juice.
🧊 How to Store
Cool completely, then refrigerate in an airtight container for up to 4 days. Reheat gently over low heat, stirring often; add 30–120 ml water to loosen if thickened. Freeze up to 2 months; thaw overnight in the refrigerator and re-blend briefly if separation occurs.
📅 Make Ahead
Cook and blend the soup up to 2 days in advance, refrigerate, and reheat gently. Add the lemon juice only right before serving for the freshest citrus aroma and brightest taste.
🍽️ Pairs Well With
- Warm flatbread or crusty bread
- A simple cucumber-and-tomato salad
- Olives and herbs as a light side plate
Regional Variations
- Tehran-style home kitchensOften kept very smooth and light, with a pronounced lemon finish and a thinner consistency suitable as a starter.
- Northern Iran (Caspian-influenced households)Sometimes made thicker and greener by using more celery leaves and simmering slightly longer before blending for a deeper herbaceous aroma.
Ingredients
- 30 gUnsalted butter (for sautéing)
- 200 gYellow onion (finely diced)
- 450 gCelery (strings removed if tough; sliced (include leaves if tender))
- 250 gPotato (peeled and diced (about 1.5 cm))
- 1000 mlWater (plus more as needed to adjust thickness)
- 7 gSea salt (about 1 1/4 tsp, plus more to taste)
- 1 gBlack pepper (about 1/2 tsp, freshly ground)
- 30 mlLemon juice (freshly squeezed (about 2 tbsp), added off heat)
🔄 Substitutions
- Unsalted butter→ Extra-virgin olive oil (30 ml)
- Potato→ Cauliflower florets (250 g)
- Water→ Vegetable stock (1000 ml)
Instructions
- 1
Prepare the vegetables: dice the onion, slice the celery (include tender leaves), and dice the potato into even 1.5 cm pieces so everything cooks at the same rate. Measure the water and lemon juice. Keep the salt and pepper ready so you can season in stages for a balanced, clean flavor.
- 2
Melt the butter in a medium pot over medium heat (about 3–4 minutes). Add the diced onion and cook 8–10 minutes, stirring often, until soft and translucent but not browned. Gentle sweating keeps the soup’s color bright and prevents a toasted taste that can overpower celery.
- 3
Add the sliced celery and cook 6–8 minutes over medium heat, stirring, until it begins to soften and smells fresh and herbaceous. This brief sauté helps the celery release aroma into the butter. Avoid high heat, which can dull the green color and create bitter notes.
- 4
Stir in the diced potato, then pour in 1000 ml water. Bring to a boil over high heat, about 6–8 minutes. Once boiling, reduce to a gentle simmer, partially cover, and cook 18–22 minutes until the potatoes and celery are very tender when pierced with a fork.
- 5
Turn off the heat. Blend until completely smooth and velvety using an immersion blender in the pot, or carefully transfer to a countertop blender in batches (do not fill above halfway). Blend 1–2 minutes per batch, then return to the pot and rewarm on low for 2–3 minutes.
- 6
Season with sea salt and black pepper, then remove from heat and stir in the fresh lemon juice. Taste and adjust: add up to 250 ml additional hot water if you prefer a lighter soup, or simmer 3–5 minutes to thicken. Serve hot, with extra pepper if desired.
🪪 Recipe Passport
Cultural Background
Celery soup is a familiar home-cooking soup in Iran, often prepared as a light first course or a soothing meal during cooler months. Its simple vegetable base and lemon finish reflect a broader Persian preference for balancing richness with acidity and freshness.
Regional Variations
Researched from multiple sources and validated by the Zaffaron editorial team. Every recipe is tested for accuracy, measurements, and cultural authenticity.
Nutrition per serving
Pairs well with
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