Radish and Herbed Olive-Butter Crostini

Ingredients

• 16 oil-cured black olives, pitted and finely chopped
• 2 scallions, finely chopped
• 3 tablespoons fresh mint, finely chopped
• 4 ounces (1 stick) unsalted butter, room temperature
• 1 pinch freshly cracked black pepper
• 1 baguette, sliced lengthwise and toasted
• 1 bunch radishes, thinly sliced and cut to fit baguette as needed, depending on their size
• 1 pinch good sea salt, to taste