Cook orzo pasta in boiling, salted water according to package instructions until al dente, then drain and rinse under cold water to cool.: You ll hear a gentle, steady boil and smell the comforting wheat aroma as the orzo pasta cooks, with small grains bobbing like tiny pearls. Aim for a firm tender texture so it remains distinct in the salad, and salt the water well to season the pasta from the inside out. After draining, rinse under cold water to stop cooking and to cool the grains so they don t steam the other ingredients. The cooling also tightens the texture slightly, giving you that pleasant chew. A common mistake is overcooking, which creates mushy bits that make the salad glue together. If you re unsure, pull a test grain and bite it to check for a slight resistance in the center.
In a large bowl, combine the cooled orzo with tomatoes, cucumber, red onion, olives, feta cheese, and parsley.: As you add each component to the bowl, you ll notice colors and textures layering, the glossy red of cherry tomatoes , the pale green of diced cucumber , and the creamy flecks of feta cheese . The cooled orzo pasta should feel separated, not sticky, which helps the vegetables mingle evenly. Toss gently to keep the feta cheese from breaking into dust, and distribute the Kalamata olives and red onion so their briny and sharp notes appear in every forkful. One pitfall here is vigorous tossing that pulverizes delicate ingredients; use a gentle folding motion to combine.
Whisk together olive oil, lemon juice, oregano, salt, and pepper in a small bowl. Pour over the salad and toss to combine.: When you whisk together the olive oil and lemon juice , tiny droplets will form an emulsion that carries flavor across the salad. Add the dried oregano and seasoning, and you ll smell the citrus lift upfront with an herbaceous undertone. This emulsion clings to the orzo pasta and vegetables, ensuring every bite has brightness. Whisk briskly so the oil and lemon integrate slightly, which prevents the dressing from separating immediately in the bowl. A frequent error is adding too much salt before tasting, especially when using feta cheese and Kalamata olives , both of which add sodium to the dish.
Pour over the salad and toss to combine: As the dressing hits the bowl, you ll see the sheen coat the ingredients, and the aroma will open up, with citrus and olive oil mingling. Toss gently so the dressing clings to orzo pasta and distributes the herb and seasoning. After tossing, pause and taste to adjust salt and pepper, or a touch more lemon juice if you want brighter acidity. Letting the salad rest for a bit allows flavors to marry, and chilling for a short time cools everything for serving. A common misstep is to dress too early and then overmix, which can make the salad soggy; dress shortly before serving or after the orzo pasta is thoroughly cooled.