Wash the cucumbers and celery thoroughly under cold water. Use a vegetable peeler to lightly peel the cucumbers if desired.
Slice the cucumbers into thin, half-moon shapes and chop the celery stalks into similar-sized pieces for uniform crunch.
Finely chop your fresh herbs—parsley, dill, or cilantro—and set aside.
Zest the lemon using a microplane or fine grater, collecting about a teaspoon of zest. Then, cut the lemon in half and squeeze out the juice into a small bowl or directly into a measuring cup.
Place the sliced cucumber, chopped celery, and herbs into a large mixing bowl.
Pour the lemon juice over the vegetables, then add the lemon zest and a drizzle of olive oil if using. Season with salt and pepper to taste.
Toss everything gently to combine, ensuring the lemon dressing coats all slices evenly and the herbs distribute throughout the bowl.
Serve immediately for the freshest crunch, or refrigerate briefly for a cooler, more refreshing flavor. Enjoy the crisp, tangy salad!