How to Make It
Crush fennel seeds with a rolling pin or heavy skillet. Heat 1 tablespoon of the butter in a large, deep skillet over medium until melted. Stir in crushed fennel seeds and grated garlic; cook, stirring often, until fragrant, about 1 minute. Stir in radishes; cook, stirring constantly, until radishes are warmed through, 2 to 3 minutes. Remove from heat. Add chives, basil, and remaining 4 tablespoons butter; stir until butter is melted. Sprinkle with salt and pepper.