Wash the radishes and cucumbers under cool water. Slice into uniform, translucent rounds, about 1/8 inch thick, and transfer to a large mixing bowl.

Rinse and roughly chop the mint leaves. Add them to the bowl with sliced radishes and cucumbers.

Squeeze the juice of half a lemon over the salad mixture. Drizzle with olive oil if desired.

Gently toss the ingredients together with salad tongs, ensuring a thorough mix.

Sprinkle with salt and black pepper, and toss again to combine seasoning.

Transfer the salad to a serving platter and serve immediately.