Chilled Greek Yogurt Soup with Cucumber and Fresh Herbs

Chilled Greek yogurt soup is a cool, tangy bowl made with cucumber, garlic, lemon, and fresh herbs, thinned until it is spoonable. Yogurt-and-cucumber soups appear in several Balkan and Mediterranean food traditions; this version uses thick Greek yogurt and a mix of grated and diced cucumber for a creamy soup with a little crunch.

Ingredients

2 medium cucumbers, about 1 lb 2 oz (500 g) total
2 cups (460 g) plain Greek yogurt, preferably whole milk
1 cup (240 ml) cold water, plus up to ½ cup (120 ml) more if needed
2 tbsp (30 ml) extra-virgin olive oil, plus 1 tbsp (15 ml) for serving
2 tbsp (30 ml) fresh lemon juice
1 small garlic clove, finely grated or minced, about 3 g
2 tbsp (6 g) finely chopped fresh dill
1 tbsp (2 g) finely chopped fresh mint
¾ tsp (4.5 g) fine salt, or to taste
¼ tsp (0.5 g) freshly ground black pepper
⅓ cup (38 g) chopped walnuts, for serving

Instructions

Rinse and dry the cucumbers. Trim off the ends, then peel them only if the skins are thick, waxed, or bitter; tender cucumber skin adds color and texture. Coarsely grate one cucumber half and finely dice the rest into pieces about ¼ inch (6 mm) wide. If the grated cucumber releases a lot of liquid, press it gently over a bowl with your hands. Do not wring it completely dry: a little cucumber juice gives the soup fresh flavor.
Put the Greek yogurt in a large bowl and whisk until smooth. Whisk in 1 cup (240 ml) cold water gradually, followed by the olive oil and lemon juice. Adding the water in stages helps the yogurt loosen evenly, without leaving thick lumps at the bottom. The mixture should be creamy and pourable, not as thin as a drink.
Stir in the garlic, dill, mint, salt, and black pepper. Fold in both the grated and diced cucumber. Taste a small spoonful and adjust the seasoning: add a little more salt if the yogurt tastes flat, or another teaspoon of lemon juice if you want a brighter, sharper finish. Keep in mind that cold foods often taste less strongly seasoned than room-temperature foods.
Cover the bowl and refrigerate the soup for 1 hour. This resting time lets the cucumber, garlic, and herbs flavor the yogurt and gives the soup time to become thoroughly cold. If you are transferring it to smaller containers, cover them well so the soup does not pick up refrigerator odors.
After chilling, stir the soup well and check its consistency. Cucumbers can release more liquid as they sit, so add the extra cold water a tablespoon or two at a time only if the soup is still thicker than you like. Taste again and adjust the salt, pepper, or lemon. Avoid adding all the optional water automatically; the amount needed depends on the yogurt and the cucumber.
Ladle into four chilled bowls. Finish each serving with chopped walnuts and a small drizzle of the remaining olive oil. Add a few extra dill or mint leaves if you have them. Serve straight away while cold; if the soup has been sitting out during a meal, return it to the refrigerator promptly.

Tips

Choose plain yogurt. Unsweetened Greek yogurt gives the soup its creamy body and gentle tang. Flavored or sweetened yogurt will make the garlic, lemon, and herbs taste out of place. Whole-milk yogurt is especially smooth, but low-fat plain Greek yogurt also works; the result will be a little lighter and may need less water.
Grate and dice for a balanced texture. The grated cucumber distributes cucumber flavor throughout the bowl, while the small dice provide distinct bites. For a fully smooth soup, blend the yogurt mixture and cucumber until creamy, then chill it. For a more rustic soup, dice both cucumbers instead; it will have a chunkier texture and may need a little more water.
Keep the garlic restrained at first. Raw garlic becomes more noticeable as it sits in the refrigerator. One small clove gives the soup a savory background without overpowering the herbs. If you know you like a stronger garlic flavor, add another half clove after chilling, taste, and wait a few minutes before adding more.
Use herbs that are fresh and dry. Wet herbs can water down the soup and cling together when chopped. Wash them in advance and pat them dry. Dill and mint are a good pairing, but parsley can replace some or all of the dill; it gives a greener, less anise-like flavor. Dried herbs are more concentrated and do not have quite the same fresh taste, so use only a small pinch if fresh herbs are unavailable.

Serving Suggestions

Serve this soup as a light lunch, a first course, or a cooling side alongside grilled vegetables, flatbread, or a spread of small dishes. It is filling enough to make a simple meal when paired with warm pita and a plate of tomatoes, olives, and sliced peppers. For a more substantial lunch, add a chickpea salad or a piece of crusty bread rather than stirring extra ingredients into the soup; that keeps the cucumber-and-herb flavor clear.

The walnuts add a welcome crunch and earthy flavor, but they are best sprinkled over each bowl just before eating so they do not soften. A drizzle of olive oil, a pinch of black pepper, and a few small herb leaves make a tidy finish. If serving the soup at a gathering, set the bowl over a larger bowl of ice and keep the toppings separate. Stir before ladling, because the cucumber and yogurt can settle or separate slightly while standing.

Variations

Make it more like a chilled cucumber-yogurt salad soup: Use ¾ cup (180 ml) water instead of 1 cup, then add only enough extra to reach the consistency you prefer. Add a handful of finely sliced scallions for a sharper, onion-like note. This version stays thick and works well in small cups as a starter.

Change the herbs: Replace the mint with 1 tbsp (4 g) chopped parsley, or use 1 tbsp (3 g) chopped chives in place of the mint for a mild onion flavor. Tarragon is more assertive, so start with 1 tsp (1 g) finely chopped and taste before adding more. These are flexible herb choices rather than required traditional ingredients.

Make it nut-free: Leave off the walnuts and finish with toasted pumpkin seeds, sunflower seeds, or a few croutons. Each substitute changes the crunch slightly; seeds have a milder, more savory flavor, while croutons make the bowl more like a light meal. For a dairy-free version, use a thick, unsweetened plant-based yogurt that you enjoy eating plain. Coconut yogurt can bring a noticeable coconut flavor, and many plant-based yogurts are thinner, so begin with less water and adjust after chilling.

Add a little heat: Stir a small pinch of Aleppo pepper or red pepper flakes into the yogurt, or dust the finished bowls lightly. Keep the heat modest so it complements rather than masks the cool cucumber and herbs. If adding a salty topping such as crumbled feta, reduce the salt in the base and taste again before serving.

Storage and Reheating

Refrigerate the soup in a covered container within 2 hours of preparing it, and keep it at 40°F (4°C) or colder. It is best within 2 days, when the herbs and cucumber taste freshest, but it can be kept refrigerated for 3 to 4 days. The cucumber will soften over time and may release water; stir the soup thoroughly before serving and adjust the thickness with a splash of cold water if needed. Store walnuts and other crunchy toppings separately.

This is a cold soup, so reheating is not recommended. Heat can make yogurt separate and turn the cucumber soft, changing the texture. If the soup has been left at room temperature for more than 2 hours, discard it rather than returning it to the refrigerator. Freezing is also not ideal: thawed yogurt can become grainy and watery, and the cucumber loses its crisp texture.

Frequently Asked Questions

Can I make chilled Greek yogurt soup ahead of time?
Yes. Make it up to a day ahead, cover it, and refrigerate. The flavor develops as it rests, though the raw garlic may become stronger. Stir and taste before serving, then adjust the lemon, salt, and water. Keep walnuts and other toppings separate until the bowls are ready.

Can I use regular yogurt instead of Greek yogurt?
Yes, but regular yogurt is thinner, so begin with less water—about ½ cup (120 ml)—and add more only if needed. The soup will be less thick and less creamy. If you have time, strain plain regular yogurt through a clean, fine-mesh cloth in the refrigerator until it thickens, then measure the amount called for in the recipe.

Should I peel or seed the cucumbers?
Peel cucumbers if their skins are tough, bitter, or heavily waxed; otherwise, leaving the skin on adds color and texture. Most standard cucumbers work without seeding. If yours have large, watery seed cavities, halve them lengthwise and scrape out the seeds before grating or dicing to help keep the soup from becoming too watery.

How can I fix soup that is too thick or too thin?
For a thick soup, whisk in cold water a tablespoon at a time until it is pourable. For a thin soup, stir in a few spoonfuls of Greek yogurt and chill it again briefly. You can also add more finely diced cucumber, but that adds moisture as it sits, so it is not as reliable a thickener.

Can I blend the soup completely smooth?
Yes. Put the yogurt, water, oil, lemon juice, garlic, herbs, salt, pepper, and cucumber in a blender and blend just until smooth. Chill for an hour as directed. Blending incorporates air and can make the soup seem slightly foamy at first; a short rest in the refrigerator lets the bubbles settle. Add the walnuts only as a topping if you want a smooth base.

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