Using a sharp chef's knife, thinly slice the veggies into rounds. You can also use a mandoline for this step
Add the sliced cucumbers and radish to a salad bowl with the chopped mint, olive oil, lemon juice, sumac, sesame seeds and salt to taste.
Toss together to combine and adjust salt. Garnish with dill and extra sesame seeds.
Serve as a side dish over labne or Greek yogurt
Leftovers can be refrigerated for 1-2 days. This recipe is best served fresh, but you can prepare the veggies and herbs and toss with the dressing before serving.