Halibut with spinach

2 tablespoons butter 1 large fennel bulb , trimmed, halved and thinly sliced cross-wise 1/2 cup sliced shallot 2 tablespoons all-purpose flour 1 1/2 cups[...]

2 tablespoons butter 1 large fennel bulb , trimmed, halved and thinly sliced cross-wise 1/2 cup sliced shallot 2 tablespoons all-purpose flour 1 1/2 cups[...]

4 halibut fillets 2 1/2 ounces butter 1 shallot , chopped 1 garlic clove , chopped 9 ounces clams 9 ounces mussels 6 tablespoons dry white wine 3 1/2 ounces[...]