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Lenten Red Lentil Soup
Instructions
I prepare the ingredients for Lenten red lentil soup. Vegetable quantities can vary 20-40 g without affecting the dish significantly. Thyme is optional but adds characteristic fresh aroma — recommended if available. Other herb options: rosemary (warming), bay leaf (subtle), Italian herb mix.
Rinse lentils thoroughly under running water — removes dust and any remaining husks.
Roughly chop onion and garlic. Size doesn't matter — the vegetables will be pureed in the final step. Save time, no fine chopping needed.
Pour vegetable oil DIRECTLY into the soup pot (skip the separate-skillet step — saves a pan to wash). Place pot on heat; add chopped onion and garlic.
Light sauté only — onion and garlic should soften and become fragrant, NOT brown. Keep heat moderate.
Cut potatoes into small cubes (1 cm) for fast cooking through.
Cut carrots into similar small cubes.
Add cubed potatoes, cubed carrots, and dried thyme to the pot. Cover with lid; simmer 10 minutes, stirring occasionally to prevent sticking. Potatoes should soften (varies by variety/cut size — adjust time as needed).
When vegetables are tender, add the rinsed lentils.
Stir; sauté lentils with vegetables 2 minutes — intensifies the lentil flavour through brief direct-heat exposure. Season with pepper.
Pour in HOT water — but NOT ALL AT ONCE (save some for final consistency adjustment).
Initial water should JUST cover the ingredients (thicker initial cook makes blender pureeing safer — too-liquid mixtures splatter hot droplets during blending).
If foam forms, skim with a spoon. Add tomato paste; stir to dissolve. Cover pot; cook 15 minutes.
During the 15 minutes, lentils break down — natural thickening of the soup occurs.
Remove pot from heat. Use immersion blender to puree everything to smooth consistency. SAFETY: only turn the blender on when fully submerged — turning on/off above the surface causes hot splatter that can cause burns.
Add the remaining water (reserved from step 11) to thin the puree to soup consistency. Season with salt to taste. Adjust thickness to preference — more water = thinner soup; less = stew-like.
Return pot to stove; bring soup back to a boil briefly to integrate the added water and finish the cook.
Lenten red lentil soup is ready. Serve HOT. Garnish options: diced sweet paprika (red colour pop, fresh crunch), chopped green onions (aromatic + colour). Alternative serving: with a dollop of sour cream (changes the dish from "lenten" to "regular" — adds creamy richness, different but excellent character).Enjoy, bon appétit!
Tips
- 1
THE NO-FRY-ONION RULE PRESERVES BRIGHT FLAVOUR. Step 5's "light sauté only, no browning" instruction is intentional. Browned (caramelised) onion adds heavy savoury notes that compete with the bright red-lentil character. Light-sautéed onion provides aromatic foundation without dominating. The colour matters too — the soup's characteristic bright red-orange comes from lentils + tomato paste; deeply browned onion would muddy this colour. Save the deep-caramelisation technique for soups where browning is the goal (French onion soup).
- 2
THE LATE-WATER SPLIT IS BLENDING SAFETY. Step 11-12+16's split-water technique (initial minimal water, more added after blending) serves two purposes. First: thicker mixture is safer to blend (less splatter). Second: water added at the end is hotter (just-boiled water from the kettle works), maintains the soup temperature better than letting all the water cool through the cooking process. Same principle applies to all immersion-blender soups — keep the volume manageable for blending. For another lentil soup variation worth comparing, see Lenten cabbage soup with sauerkraut and beans.
- 3
THE RED-LENTIL CHOICE IS SPEED + TEXTURE. Red lentils (split, hulls removed) cook in 15-20 minutes vs 30-45 minutes for green/brown lentils. Red lentils also break down more during cooking — naturally thickening the soup and producing the characteristic creamy puree texture. Substituting other lentil varieties: extends cooking time AND requires more aggressive blending to achieve the same texture. The 30-minute recipe time depends specifically on red lentils. For different colour soups: yellow split peas produce similar quick texture in golden colour.
- 4
THE THICKNESS-ADJUSTMENT FLEXIBILITY. Step 16's "adjust thickness to preference" is genuine personal preference latitude. Three styles work: STEW-style (thick, holds spoon shape briefly — comfort food), SOUP-style (medium thickness, normal soup consistency — versatile), THIN-style (broth-thick, very liquid — drinking soup). Adjust water at step 16 to reach your preferred style. The same recipe scales to all three thickness options without other modifications. Family preferences vary; experiment to find your household's preference. For another puree-style soup worth trying, try Red Lentil Puree Soup.
FAQ
What does "lenten" mean? +
"Lenten" (Russian "postny") refers to food suitable for Russian Orthodox Lent — the 40-day fasting period before Easter when observers abstain from animal products (meat, dairy, eggs, fish on most days). Lenten dishes use only plant-based ingredients. This soup qualifies because it contains: vegetables (allowed), grains/legumes (allowed), vegetable oil (allowed), water and herbs (allowed). The "lenten" label tells observant cooks the dish fits fasting requirements. For non-fasting use: the soup is just a plain vegetable soup, equally good. Many Russians have lenten dishes in regular rotation regardless of religious observance — they're often lighter and healthier.
Can I make this with other lentils? +
Yes — with adjustments. Green or brown lentils: increase initial cook to 25 minutes; they don't break down as completely, so blending is more important. French Puy lentils: even firmer, better for non-pureed soups. Yellow split peas: similar quick-cooking to red lentils, golden colour, excellent flavour. Combination: 200 g red + 50 g green for textural variety. The recipe is forgiving for substitution; adjust cooking time and accept slightly different texture.
How can I make it more filling? +
The soup is already substantial, but enhancement options exist. Best additions: 100 g cooked rice (added at end, increases body), 100 g cooked quinoa (modern healthy option), 100 g chickpeas (added at step 13, plant protein boost), tofu cubes (added at end), seitan cubes (more protein-dense), or 50 g soaked dried mushrooms (porcini, shiitake — added with potatoes for full flavour development). Each addition shifts the dish character slightly — rice/quinoa add starch body, chickpeas add protein, mushrooms add umami depth. The base recipe is excellent on its own; additions are personal preference.
How long does it keep? +
Refrigerated, 4-5 days at peak quality. The soup actually IMPROVES with overnight rest — flavours integrate, the puree texture homogenises further. Reheat in saucepan over medium heat with frequent stirring (the bottom can scorch the tomato paste). Add 100 ml water if too thick. Don't microwave large portions (uneven heating). Freezing: works well (3-month freezer life), the puree texture is stable through freeze-thaw. For meal-prep approach: cook a double batch on Sunday, freeze half in single-serving containers, eat fresh from fridge across the week. Excellent meal-prep candidate.
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