In a medium-sized mixing bowl, add finely cubed red radishes and freshly chopped parsley. Gently toss together until well mixed.

Squeeze in the juice of one lemon into the bowl, catching any seeds, then sprinkle in kosher salt and freshly ground black pepper to taste. Toss the mixture to coat evenly.

Drizzle one tablespoon of olive oil over the salad and toss again until all ingredients are well-coated.

Taste the salad and adjust seasoning if necessary by adding more lemon juice or salt and pepper.

Serve immediately for the best flavor and texture.