Clam Pan Roast with Sausage and Fennel

Cook garlic and Italian sausage in a deep straight-sided skillet or Dutch oven over medium, stirring and breaking up meat with a spoon, until sausage is no longer pink, about 5 minutes; transfer to a bowl with a slotted spoon. Drain all but 1 tablespoon fat from skillet. Cook kielbasa, stirring occasionally, until crisp, 8 to 10 minutes. Add to bowl.

Arrange potatoes in skillet, cut-side down; cook until golden brown, 5 to 7 minutes. Flip potatoes; cook until just tender, about 5 minutes more. Scatter fennel over potatoes. Cook, stirring frequently, until fennel is tender, about 10 minutes.

Add leek, Pernod, and clam juice. Season with salt and pepper. Cook, stirring occasionally, until leek is tender, about 5 minutes. Return sausage mixture to pan; stir to combine. Add clams, cover, and cook 5 minutes. Add tomatoes; cook, covered, until clams open, about 8 minutes.

Discard any unopened clams and remove pan from heat. Stir in tarragon and serve.