Slice the celery stalks thinly on a bias to maximize crunch and create an elegant presentation. Soak the sliced celery in ice water for 20 minutes—this hydrates the cells and makes them extra crisp. While the celery soaks, you can prepare your other ingredients. After soaking, drain the celery thoroughly and pat dry with paper towels to remove excess moisture, which ensures the dressing coats properly without diluting.
Toast the almonds in a dry skillet over medium heat for 5-7 minutes, stirring occasionally, until fragrant and golden. I like to do this step while the celery soaks so everything is ready at the same time. Let the almonds cool slightly, then chop them into bite-sized pieces. While the almonds cool, pit and slice the dates into thin slivers, mince the fresh mint, and use a vegetable peeler to shave the Parmesan into large, delicate shards.
Transfer the dried celery to a large bowl and add the chopped almonds from Step 2, sliced dates, and red pepper flakes. In a small bowl, whisk together the lemon juice, olive oil, salt, and black pepper to create a balanced vinaigrette. I always use a quality olive oil like Lucini for dressings because it makes a noticeable difference in the final flavor. Pour the dressing over the salad and toss gently but thoroughly to coat all ingredients evenly.
Top the dressed salad with the Parmesan shards from Step 2 and the chopped mint. Toss one final time gently to incorporate the cheese and herbs without breaking the Parmesan shards too much. Serve immediately while the celery is still crisp and the flavors are bright.