Cucumber Soup

Is Cucumber Soup the Easiest Low-Carb Lunch You’re Not Making?

Did you know a cucumber is about 95% water, according to USDA FoodData Central? Most people assume a cold, watery vegetable can’t turn into a filling meal. This cucumber soup proves them wrong. Each bowl has roughly 6 g of net carbs, takes only 15 minutes of hands-on work, and needs no stove at all. If you want a fresh, creamy, keto-friendly lunch, this cucumber soup recipe is a great place to start.

The secret is creamy fats. Avocado, Greek yogurt, and olive oil give the soup a silky texture and keep you full for hours. Fresh dill, lemon, and garlic add the bright flavor. Looking for more ideas like this? Browse our full list of keto lunch recipes.

Ingredients for Cucumber Soup

This recipe makes 4 servings.

• 3 large English cucumbers (about 1.2 kg), peeled and chopped. They taste crisp, clean, and slightly sweet, with fewer seeds than regular cucumbers.
• 1 ripe avocado. It makes the texture buttery and smooth.
• 1 cup full-fat plain Greek yogurt. It adds tang and protein.
• 2 cloves garlic. They give a gentle bite.
• 1/4 cup fresh dill, packed. It smells herby and bright.
• 2 tablespoons fresh lemon juice
• 2 tablespoons extra virgin olive oil
• 1/2 cup cold water or chilled bone broth
• 1/2 teaspoon salt, plus more to taste
• 1/4 teaspoon black pepper

Substitutions:

• Dairy-free: use unsweetened coconut yogurt.
• No dill: use fresh mint or chives.
• No avocado: use 1/4 cup sour cream or extra yogurt.
• More protein: stir in unflavored collagen powder.

Timing

• Prep time: 15 minutes
• Cook time: 0 minutes
• Chill time: 30 minutes
• Total time: 45 minutes

That is roughly 15 to 20 minutes faster than many hot soups, which often take an hour or more. If you love hot soups too, try our keto French onion soup on a cooler day. This cucumber soup recipe saves you from standing over a hot stove.

Cucumber Soup Recipe Step by Step

Step 1: Prep the Cucumbers

Peel the cucumbers. If you use regular cucumbers, cut them in half and scoop out the seeds with a spoon, since the seeds can taste bitter. Chop the flesh into chunks so your blender can work easily.

Step 2: Add Everything to the Blender

Add the cucumbers, avocado, yogurt, garlic, dill, lemon juice, olive oil, water, salt, and pepper. Put the liquid in first so the blades spin freely.

Step 3: Blend Until Smooth

Blend on high for 45 to 60 seconds. Taste your cucumber soup and adjust the seasoning. A little more lemon makes it brighter, and a pinch more salt brings out the flavor.

Step 4: Adjust the Texture

If it feels too thick, add a splash of cold water. If you like it thicker, add a few more spoonfuls of yogurt or half an avocado.

Step 5: Chill Before Serving

Pour the soup into a bowl or jar, cover it, and chill for at least 30 minutes. Cold soup tastes better because the flavors blend and the garlic mellows.

Step 6: Garnish and Serve

Ladle into bowls. Top with a drizzle of olive oil, a sprig of dill, and a pinch of black pepper.

Nutritional Information

Estimated values per serving (1 of 4). These are approximate and vary with the brands you use.

• Calories: about 170
• Total fat: 12 g
• Protein: 6 g
• Total carbs: 9 g
• Fiber: 3 g
• Net carbs: about 6 g
• Sugar: 5 g
• Sodium: about 330 mg

Cucumbers are low in calories and carbs, and they add hydration. Avocado supplies healthy fats and potassium, and Harvard Health notes that half a medium avocado has about as much fat as a tablespoon of olive oil. Greek yogurt adds protein and calcium. Together they make a balanced, low-carb lunch that fits a keto routine.

Healthier Alternatives for This Cucumber Soup Recipe

• Lower fat: Use 2% Greek yogurt and half the avocado.
• Dairy-free or vegan: Swap in coconut or almond yogurt.
• Higher protein: Add a scoop of unflavored protein powder or serve with grilled chicken.
• More greens: Blend in a handful of baby spinach. The color deepens, but the flavor stays mild.
• Less sodium: Use water instead of broth and season with extra lemon and herbs.
• Extra gut support: Add a spoonful of kefir in place of some yogurt.

Serving Suggestions

Serve cucumber soup in small glasses as a starter, or in a big bowl as a light lunch. For a fuller meal, try one of these:

• Top with cooked shrimp or smoked salmon.
• Add crispy bacon bits for a salty crunch.
• Sprinkle with toasted pumpkin seeds or chopped almonds.
• Pair with a cheese crisp or a keto flatbread.
• Add a spoonful of diced radish for a peppery bite.

It also works well as a hot-day meal, a picnic lunch in a jar, or a cool side dish for grilled meats. For a warm option on the side, our creamy zucchini soup makes a great pairing.

Common Mistakes to Avoid

• Leaving in the seeds and skin. Thick skin and large seeds can make the soup bitter. Peel and deseed when needed.
• Skipping the chill time. Warm cucumber soup tastes flat and the garlic hits too hard. Always chill it.
• Over-diluting. Adding too much water makes it thin. Add liquid a little at a time.
• Using underripe avocado. It won’t blend smoothly and can taste grassy. Choose one that gives slightly when pressed.
• Underseasoning. Cold food needs more salt and acid than you’d expect. Taste again after chilling.
• Blending too long. Over-blending can make the soup foamy. Stop once it’s smooth.

Storing Tips for the Recipe

Store cucumber soup in an airtight container in the fridge for up to 2 days. Stir it before serving, since it can separate slightly. Add a little extra lemon juice to keep the color fresh and prevent the avocado from browning.

To save time, chop the cucumbers and herbs ahead and keep them in the fridge for up to a day. Blend with the avocado right before chilling for the best flavor and color.

Conclusion

This cucumber soup is a cool, creamy, low-carb lunch you can make in 15 minutes without cooking. It is rich in flavor, light on carbs, and easy to adapt. Try it, leave a comment on our blog, and subscribe for more keto recipes.

FAQs

Cucumber Soup

Recipe by Leese

0.0 from 0 votes

Course: LunchCuisine: American

Servings

4

servings

Prep time

15

minutes

Cooking timeminutes

Total time

45

minutes

A creamy, no-cook cucumber soup recipe with only 6 g net carbs per serving. Ready in 15 minutes and perfect for a keto lunch.

Ingredients

• 3 large English cucumbers, peeled and chopped

• 1 ripe avocado

• 1 cup full-fat plain Greek yogurt

• 2 cloves garlic

• 1/4 cup fresh dill, packed

• 2 tablespoons fresh lemon juice

• 2 tablespoons extra virgin olive oil

• 1/2 cup cold water or chilled bone broth

• 1/2 teaspoon salt

• 1/4 teaspoon black pepper

Directions

• Prep the cucumbers:
  Peel the cucumbers, remove seeds if using regular cucumbers, and chop into chunks.
• Add everything to the blender:
  Add cucumbers, avocado, yogurt, garlic, dill, lemon juice, olive oil, water, salt, and pepper.
• Blend until smooth:
  Blend on high for 45 to 60 seconds, then taste and adjust the seasoning.
• Adjust the texture:
  Add cold water to thin or extra yogurt to thicken.
• Chill:
  Cover and chill for at least 30 minutes.
• Garnish and serve:
  Top with olive oil, dill, and black pepper.