Preheat your grill to high. Rub the corn with the oil. Grill until charred on all sides, about 20-25 minutes, rotating every 8-10 minutes. Set aside until cool enough to handle.: The air will smell hot and metallic as the grill heats, and you should hear a steady hiss when you place a drop of water on the grates if they are ready. High heat creates bold char lines and caramelization on the corn , which brings out smoky sweetness you cannot get any other way. A common error is using medium heat, which leads to long cooking that dries the kernels instead of charring them quickly, so aim for a genuinely hot surface. When the grill is hot, you will see thin wisps of smoke and the grates will glow slightly.
Put the zucchini noodles in a strainer over a bowl and toss with a pinch of salt. Let them sit while the corn cooks, so they begin to release their water, tossing occasionally.: Rubbing the corn with a thin coating of olive oil ensures the kernels char evenly and develop sweet, browned spots. As you rub, the husked ear will feel slick and glossy, and the oil helps prevent sticking. If you apply too much oil, the corn will steam rather than char, creating a softer texture and paler appearance, so use just the indicated amount and evenly coat the surface. The oil also helps the salt and any seasoning adhere during grilling.
Once the zoodles have drained, use two layers of paper towels to press out as much moisture as you possibly can. Cover the zucchini noodles with paper towel and gently press out even more moisture. It seems excessive, but it's key to a salad that isn't watery!: You will hear subtle sizzling and see color deepen to golden and then to brown and blackened spots as the sugars caramelize. Turning every 8 to 10 minutes ensures even charring and prevents burnt spots that taste acrid. Watch for puffing kernels and a nutty aroma, signals that the corn is caramelizing correctly. Overcooking will dry the kernels and make them chewy rather than juicy, so remove them when you see even char and a toasty smell. After grilling, allow the cobs to cool until you can handle them without burning your fingers.
Toss the zoodles with the feta cheese and blueberries in a large bowl. Using a sharp knife, cut the grilled corn kernels off the cobs and add to the zoodles.: The first sign of success here is droplets collecting in the bowl as the salted zucchini releases water, a faint vegetal scent rising as moisture drains away. Salting helps the strands relax and lose excess liquid that would otherwise dilute the dressing and make the salad soggy. Toss the strands gently so they separate and release more water, but avoid crushing them. A mistake some people make is skipping this step, which results in a watery final dish; the draining step is essential to keep the texture bright.
In a small food processor (mine is 3 cups) process the lime juice, honey, basil, and salt until smooth and combined. With the food processor running, stream in the oil until the dressing thickens slightly.: You will notice the zucchini strands gradually collapse and feel less rigid as they exude liquid, and the collected juices in the bowl will look slightly green. Periodically toss to expose new surfaces to the salt, encouraging steady drainage. This resting period is not idle, it sets the foundation for a crisp salad. If you rush this process, the dressing will be diluted and the salad will lack the intended bite.
Pour the dressing over the salad and toss to coat evenly.: Pressing should yield a sigh of liquid absorbed into the towels, and the strands will feel drier and more compact in your hands. This step dramatically improves the final mouthfeel by removing hidden water that weights down the dressing and makes the salad limp. Press gently but firmly, and replace towels if they become saturated. Overpressing can bruise the delicate strands, so apply steady, even pressure rather than aggressive squeezing.
Refrigerate for at least 1 hour before serving, so the flavors develop.: After the initial press, additional gentle pressure further reduces surface moisture, so the dressing will cling instead of sliding off. The zucchini should look matte rather than glossy when you are done, and it will have a pleasantly springy texture. A common pitfall is leaving moisture trapped inside the spiralized strands, which causes the salad to separate and pool liquid at the bottom; thorough pressing prevents that.
Toss the zoodles with the feta cheese and blueberries in a large bowl: When combined, you should see pops of white from the crumbled feta cheese and navy blue from the blueberries dotting the pale green strands, creating visual contrast. The creamy saltiness of the feta cheese and the sweet, tart burst of each blueberry balance the neutral zucchini base. Mix gently so you do not crush the blueberries while still distributing the feta cheese . Crushing the berries will release color and extra moisture, so handle them delicately.
Using a sharp knife, cut the grilled corn kernels off the cobs and add to the zoodles: As you slice, the kernels should fall away with satisfying little pops, releasing a smoky sweetness and warmth into the bowl if they are still slightly hot. The corn adds chew and a charred flavor component that contrasts with the raw zucchini . Be careful when cutting so you do not gouge the cob or lose kernels; hold the cob upright on a cutting board and run the knife down with controlled pressure. If the corn is too hot, let it cool a touch to avoid wilting the zucchini .
In a small food processor process the lime juice, honey, basil, and salt until smooth and combined: When processed, the mixture will turn vibrant green and smell sharply aromatic from the basil and citrusy from the lime juice . The honey adds viscosity and sheen, while the salt rounds the flavors. If your food processor is small, you may hear a high pitched whir and see the mixture quickly unify; scrape down the sides as needed to ensure even blending. Underprocessing can leave large basil pieces that create uneven texture, while overprocessing too long can bruise the herbs and produce a slightly bitter note.
With the food processor running, stream in the oil until the dressing thickens slightly: As the olive oil emulsifies with the citrus and honey, the dressing will take on a glossy, slightly thicker texture and cling to the back of a spoon. Pour slowly to create a stable emulsion; if you add the oil too fast the dressing can separate and appear slick rather than cohesive. If separation occurs, stop adding oil and blend a bit longer to bring it back together. The aroma should smell balanced, not overly oily.
Pour the dressing over the salad and toss to coat evenly: As you dress the salad, notice the strands become lightly glazed, the feta cheese takes on flecks of green from the dressing, and the blueberries glisten. Toss with a gentle lifting motion so the dressing coats rather than drenches the ingredients. If you pour too much dressing at once, the salad may become oily, so add gradually and taste until balanced. The final texture should be lightly dressed and lively.
Refrigerate for at least 1 hour before serving, so the flavors develop: Chilling melds the bright citrus with the basil and lets the flavors settle into the zucchini , resulting in a more harmonious bite. The salad will taste more integrated after resting, and the dressing will cling better. Avoid skipping this rest time; serving immediately can leave flavors too sharp and unaligned. When chilled, the salad will feel refreshing on the palate and the textures will remain crisp.