This classic Marinated Cucumber Salad is a refreshing, crisp summer staple that balances crunchy sliced cucumbers, ripe tomatoes, and sweet onions in a tangy sweet-and-sour vinaigrette. Submerging garden-fresh vegetables in a light vinegar-based marinade preserves their crisp cellular snap while infusing every slice with bright flavor.
Equipment & Ingredients
Component Breakdown
| Section | Ingredient | Quantity | Functional & Culinary Role |
| Fresh Produce | Cucumbers (English or Persian) | 2 large, sliced thin | Primary crisp, high-water vegetable foundation. |
| Ripe tomatoes (Roma or vine-ripe) | 2 to 3 medium, chopped | Juicy, sweet acid bursts. | |
| Red or sweet yellow onion | 1 medium, thinly sliced | Pungent allium contrast that mellows in the acid brine. | |
| Sweet-and-Sour Marinade | Vinegar (apple cider or white) | ½ cup (120ml) | Acidic pickling base that tenderizes and preserves vegetables. |
| Olive oil or neutral oil | ¼ cup (60ml) | Lipid carrier that coats vegetable walls and carries flavors. | |
| Cold water | ¼ cup (60ml) | Moderates acidity concentration. | |
| Granulated sugar | 1 to 2 tbsp | Sweet balancer that cuts through sharp acetic acid. | |
| Fine salt & black pepper | 1 tsp salt, ½ tsp pepper | Draws out vegetable juices and seasons the vinaigrette. | |
| Optional Garnishes | Fresh dill or parsley | 2 tbsp, chopped | Herbal lift and vibrant green visual accent. |
🧪 Food Science: Osmotic Pickling & Acid Mellowing
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Osmotic Liquid Extraction: Cucumbers and tomatoes consist of over 90% water held inside cellular vacuoles. The salt and sugar in the marinade establish an osmotic pressure gradient, drawing out excess vegetable water while simultaneously absorbing the seasoned vinegar-oil emulsion back into the cell walls.
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Allium De-Pungency via Acetic Acid: Raw onions contain sulfur compounds (syn-propanethial-S-oxide) responsible for harsh stinging and bite. Soaking sliced onions in an acidic vinegar bath denatures these volatile enzymes, transforming sharp raw onions into crisp, pleasantly sweet slices.
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Non-Reactive Vessel Necessity: Acetic acid in vinegar reacts with active metals like aluminum or unlined copper, creating metallic off-flavors and discoloring tomatoes. Always marinate in glass, ceramic, or food-grade stainless steel bowls.
Step-by-Step Instructions:
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