This is a six-ingredient tomato and olive salad that takes 15 minutes and no cooking. Heirloom tomatoes, pitted black olives, red onion, fresh basil, olive oil, and red wine vinegar โ thatโs the whole list. It works because the ingredients are doing the heavy lifting, so quality matters more here than in most salads.
What makes this version work
Two things. First, the ratio of acid to oil: one tablespoon of red wine vinegar to two tablespoons of olive oil is sharper than a standard vinaigrette, and thatโs intentional โ tomatoes are sweet and watery, so the dressing needs enough bite to cut through them. Second, salt. Salting the tomatoes right before you toss everything pulls out just enough juice to create a light, natural dressing in the bottom of the bowl. Donโt salt them early and let them sit, or youโll end up with a puddle. Toss and serve.
Substitutions that actually work
- Heirloom tomatoes: Any ripe, in-season tomato works. Cherry tomatoes halved are a good call โ less chopping, and they hold their shape better after tossing.
- Black olives: Kalamata olives are a direct swap and bring a slightly more assertive brine. Avoid canned California-style black olives โ theyโre bland and add nothing.
- Red onion: If raw red onion is too sharp for you, soak the slices in cold water for 10 minutes, then drain. Takes the edge off without losing the crunch.
- Red wine vinegar: Sherry vinegar works well. Balsamic adds sweetness but also darkens the tomatoes โ fine if you donโt mind the look.
What can go wrong
- Watery salad: Tomatoes release liquid fast once cut. If your tomatoes are very ripe, dice them over a bowl, discard the excess juice, then proceed. This keeps the dressing from getting diluted.
- Basil turns black: Basil bruises the moment itโs cut with a knife. Tear it by hand right before serving, not before. If you tear it early and it sits, it oxidizes and looks unappetizing even though it still tastes fine.
- Olives overpower everything: A full cup of coarsely chopped olives is a lot of salt and brine. Taste before adding the sea salt โ you may need far less than a teaspoon, or none at all.
- Dressing pools at the bottom: The olive oil and vinegar wonโt emulsify on their own in this recipe. Toss the salad again just before serving to redistribute everything evenly.
- Flat flavor: If it tastes dull, the fix is almost always more acid, not more salt. Add a small extra splash of red wine vinegar and taste again.
Keeping leftovers crisp
Dress it at the table โ a pre-dressed salad goes limp fast. If you need to prep ahead, combine the tomatoes, olives, and onion in a bowl and refrigerate uncovered for up to two hours; mix the dressing separately and keep the basil whole and unwashed. Dress and add the basil only when youโre ready to eat. Leftovers stored dressed in the fridge are edible the next day but noticeably softer โ the tomatoes break down overnight. Theyโre still good stirred into scrambled eggs or spooned over toast, but donโt expect the texture to hold.
Croatian Black Olive and Tomato Salad
Equipment
- 1 Cutting board
- 1 Chef's Knife
- 1 Mixing bowl
- 1 Wooden spoon
Ingredients
- 2 cups heirloom tomatoes diced into 1-inch cubes
- 1 cup pitted black olives coarsely chopped
- ยฝ cup red onion thinly sliced
- 2 tablespoons extra virgin olive oil preferably Croatian
- 1 tablespoon red wine vinegar
- 1 teaspoon sea salt to taste
- ยฝ teaspoon black pepper freshly ground
- ยผ cup fresh basil leaves torn
Instructions
- Begin by prepping your ingredients. Dice the heirloom tomatoes into 1-inch cubes and coarsely chop the pitted black olives.
- Thinly slice the red onion, aiming for delicate ribbons that meld beautifully into the salad.
- In a large mixing bowl, combine the tomatoes, olives, and onions.
- Drizzle with the Croatian extra virgin olive oil and red wine vinegar.
- Season with sea salt and freshly ground black pepper. Toss gently with a wooden spoon to ensure even distribution of flavors.
- Tear the fresh basil leaves by hand and fold them gently into the salad, preserving their vibrant aroma and color.
Notes
Nutrition
Common questions
Can I use regular tomatoes instead of heirloom?
Yes, any ripe tomato works here. The key word is ripe โ an underripe tomato will make the salad taste flat no matter what else you do. Roma tomatoes are a reliable year-round option because theyโre meatier and less watery than standard round tomatoes.
Do I need to pit the olives myself?
No โ buy them already pitted and save yourself the work. Just check the label to confirm theyโre pitted before you chop, since some bulk olive bins mix both.
Is this salad vegan?
Yes, as written itโs fully vegan. All six ingredients are plant-based.
How do I keep the red onion from being too harsh?
Soak the sliced onion in cold water for 10 minutes, then drain and pat dry before adding it to the bowl. This mellows the raw bite significantly without cooking the onion or changing its texture.
What do I serve this with?
It works best alongside something simple โ grilled fish, roasted chicken, or crusty bread. The brine from the olives and the acidity of the dressing make it a strong contrast to rich or fatty mains.
Can I make this salad a few hours ahead for a party?
Prep the components separately and hold off on dressing until just before serving. Combined and dressed more than 30 minutes ahead, the tomatoes soften and release enough liquid to make the whole thing watery.