Tomato and Onion Salad

Last summer, my neighbor Maria taught me how she makes this salad in her tiny kitchen in Athens. She insisted the onions needed to be paper-thin, almost translucent, and that the dressing should be mixed with your fingers to feel the temperature change. Now I make it every time tomatoes look too perfect to pass up at the market.

I brought this to a potluck last month and watched three different people ask for the recipe. Someone actually leaned over the platter and inhaled deeply before taking a bite, which felt like the ultimate compliment. Simple food has a way of making people stop and notice what they are eating.

Ingredients

• 4 medium ripe tomatoes: Choose ones that give slightly when pressed, they will release more juices and have better flavor than firm ones
• 1 large red onion: Thin slices are key here, use a sharp knife and take your time or use a mandoline if you have one
• 2 tablespoons fresh parsley: Flat-leaf parsley has more flavor than curly, and adding it right before serving keeps it bright and green
• 3 tablespoons extra-virgin olive oil: The good stuff matters since this dressing is so simple, use one you would dip bread into
• 1 tablespoon red wine vinegar: Adds a sharp brightness that cuts through the rich oil and sweet tomatoes
• 1 teaspoon lemon juice: Fresh squeezed makes a noticeable difference in how bright the dressing tastes
• ½ teaspoon salt: Helps draw out moisture from the tomatoes and onions, creating those delicious pooled juices at the bottom
• ¼ teaspoon freshly ground black pepper: Grind it right before adding for the most aromatic punch

Instructions

Prep your vegetables:

Slice the tomatoes into rounds or wedges depending on their size, then arrange them on your serving plate with the onion slices layered throughout

Make the dressing:

Whisk together the olive oil, red wine vinegar, lemon juice, salt, and pepper in a small bowl until slightly thickened

Dress the salad:

Drizzle the dressing evenly over everything, trying to hit both the tomatoes and onions as you pour

Add the finishing touch:

Sprinkle the chopped parsley over the top right before serving so it stays vibrant and fresh

Let it rest:

Give the salad about five minutes to sit at room temperature, letting the flavors meld and the vegetables release some of their juices

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My grandmother would have loved how unpretentious this is, how it relies entirely on the quality of what you put in rather than any fancy technique. Sometimes the most satisfying things to eat are just good ingredients treated with respect.

Making It Your Own

Once you have the basic version down, this salad becomes a canvas for whatever looks good at the market. Cucumber adds crunch, feta adds creaminess, and capers add a briny punch that works beautifully with the sweet tomatoes.

Serving Suggestions

This is perfect alongside grilled fish, roasted chicken, or as part of a larger mezze spread. The acidity cuts through rich foods while the fresh flavors keep everything feeling light and balanced.

Storage Tips

This salad is best eaten the same day it is made, as tomatoes continue to break down and release liquid. If you must save leftovers, store them in the refrigerator but know the texture will change significantly overnight.

• Keep the dressing separate if you are planning to pack this for lunch
• Add the parsley just before serving to prevent it from wilting
• Use any leftover juices as a base for a quick pan sauce

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Good food does not have to be complicated, and this salad is proof of that. Sometimes the perfect dinner is just ripe tomatoes, sharp onions, and enough time to let them shine.

Recipe FAQs

→ How do I reduce the sharpness of raw onions?

Soak the thinly sliced red onion in cold water for 10 minutes before using. This simple step mellow the harsh bite while maintaining the crisp texture and mild sweetness that complements the tomatoes perfectly.

→ Can I make this salad ahead of time?

This dish tastes best when served within an hour of preparation. The tomatoes release moisture as they marinate, which can make the salad watery if left for too long. Keep the dressing separate and toss just before serving if you need to prep in advance.

→ What other vegetables work well in this salad?

Sliced cucumbers add refreshing crunch, while bell peppers contribute sweetness and color. Thinly sliced radishes provide a peppery bite that contrasts nicely with the mellow tomatoes. Keep vegetables uniformly thin for even marinating.

→ Is there a substitute for red wine vinegar?

White wine vinegar offers a milder acidity, while balsamic adds sweetness and depth. Apple cider vinegar works well too, imparting a slightly fruity note. Adjust the quantity slightly depending on your vinegar's intensity.

→ How should I store leftovers?

Store any remaining salad in an airtight container in the refrigerator for up to 2 days. Note that the tomatoes will continue to release liquid and the onions will soften over time. Drain excess liquid before serving leftovers.

→ Can I add protein to make this a complete meal?

Crumbled feta cheese adds creaminess and protein, while chickpeas or white beans provide hearty substance. Grilled chicken or shrimp transforms this side into a substantial main course while maintaining the fresh, vibrant character.