This is a five-ingredient cucumber salad dressed in a lemon-zest vinaigrette with white balsamic and cold-pressed olive oil. It comes together in ten minutes with no cooking. If you need something fresh and low-effort on the table tonight, this is a reliable choice.
What makes this version work
Two things carry this salad. First, how you cut the cucumber matters more than it sounds โ slicing it lengthwise into thin rectangles instead of rounds gives each piece more surface area, so the dressing actually coats it rather than sliding off. Second, the dressing uses lemon zest rather than lemon juice. Zest delivers bright citrus flavor without adding more liquid, which keeps the vinaigrette from turning watery and diluting the white balsamic. Dress it at the table โ a pre-dressed salad goes limp fast, and cucumber releases water quickly once salt hits it.
About the ingredients
- White balsamic vinegar: Milder and less sweet than regular dark balsamic, and it wonโt stain the cucumber slices brown. If you only have regular balsamic, use half the amount and expect a stronger flavor.
- Cold-pressed olive oil: This just means minimally processed extra-virgin olive oil. Any good-quality extra-virgin olive oil works fine.
- Feta cheese: Listed as optional. If you use it, crumble it by hand rather than buying pre-crumbled โ itโs creamier and holds its texture better against the vinaigrette.
- Lemon zest: Zest the lemon before you do anything else, while itโs still whole and easy to grip. A microplane or the fine side of a box grater both work.
Leftovers and meal prep
This salad does not store well once dressed โ the cucumber softens and the onion sharpens overnight in a way most people find unpleasant. If you want to get ahead, slice the cucumber and onion and keep them dry in a sealed container in the fridge for up to 24 hours. Mix the dressing separately and refrigerate it in a small jar. Combine everything right before serving. If you do end up with leftovers, drain off the liquid that collects at the bottom before eating โ the flavor will still be there, even if the texture is softer.
Common problems and fixes
- Salad is watery by the time you serve it: Cucumber releases moisture fast, especially after salt is added. Salt the cucumber slices lightly, let them sit in a colander for five minutes, then pat them dry before tossing with the dressing.
- Red onion is too sharp or pungent: Soak the sliced onion in cold water for five to ten minutes, then drain and pat dry. This pulls out the harsh sulfur compounds without losing the onion flavor entirely.
- Dressing separates and wonโt coat the vegetables: Olive oil and vinegar naturally separate. Whisk them together in a small bowl right before pouring, or shake them in a sealed jar. Donโt mix the dressing ahead and let it sit.
- Cucumber slices are uneven and some are too thick: Thick slices donโt absorb the dressing the same way thin ones do. Use a sharp chefโs knife and take your time, or use a mandoline set to about 3mm if you have one.
- Feta turns the whole salad salty: Feta is already well-salted, so hold off on adding the pinch of sea salt to the salad itself until after youโve tasted it with the cheese on top.
Light and Easy Cucumber Salad with Lemon Zest Vinaigrette
Equipment
- Sharp chefโs knife or mandoline slicer
- Microplane or fine grater (for lemon zest)
- Large mixing bowl
- Small jar with lid (for dressing)
Ingredients
Salad
- 1 small red onion sliced
- 1 whole English cucumber about 12 oz / 340g
- 2 oz feta cheese crumbled, optional (about 55g)
- ยผ teaspoon sea salt
- โ teaspoon freshly ground black pepper
Dressing
- 2 tablespoons olive oil cold-pressed
- 1 tablespoon white balsamic vinegar
- 1 teaspoon lemon zest finely grated, from about 1 medium lemon
- โ teaspoon sea salt
Instructions
- Slice the red onion into thin half-moons. Cut the cucumber in half lengthwise, then slice each half into thin rectangles about โ inch / 3mm thick. A mandoline slicer makes this faster and more uniform, but a sharp knife works well.1 small red onion, 1 whole English cucumber
- In a small jar or bowl, whisk together the olive oil, white balsamic vinegar, lemon zest, and โ teaspoon sea salt until emulsified.2 tablespoons olive oil, 1 tablespoon white balsamic vinegar, 1 teaspoon lemon zest, 1/8 teaspoon sea salt
- Add the cucumber and red onion to a large bowl. Season with ยผ teaspoon sea salt and the black pepper, then pour the dressing over and toss gently until evenly coated.1 small red onion, 1 whole English cucumber, 1/4 teaspoon sea salt, 1/8 teaspoon freshly ground black pepper
- Transfer to a serving plate and crumble feta cheese over the top if using. Serve immediately โ this salad is best eaten within 15-20 minutes of dressing.2 oz feta cheese
Notes
Nutrition
Your questions, answered
Do I need to peel the cucumber first?
No, you donโt have to. English cucumbers have thin skin thatโs easy to eat and holds the slices together. If youโre using a standard garden cucumber with thicker, waxed skin, peeling it is worth the extra minute.
Can I make this salad without white balsamic vinegar?
Yes โ apple cider vinegar is the closest substitute in terms of mild acidity and light color. Red wine vinegar also works but has a sharper bite, so start with a little less than the recipe calls for and taste as you go.
How do I know if the dressing is seasoned correctly before I toss it?
Dip a cucumber slice into the dressing and taste it โ thatโs the most accurate test. Dressing tasted on its own straight from a spoon almost always seems too sharp or too oily, because itโs meant to be diluted across the vegetables.