Grilled Mussels With Café De Paris Butter

Name: Grilled Mussels With Café De Paris Butter
Ingredients: CAFÉ DE PARIS BUTTER; 1 cup (250g) unsalted butter, diced, plus 2½ tablespoons extra; ¼ cup (40g) finely diced shallots; 1 tablespoon finely chopped garlic; 2 teaspoons curry powder; ¼ cup (60ml) white wine; 2 tablespoons Worcestershire sauce; 1½ tablespoons Dijon mustard; 1½ tablespoons wholegrain mustard; a pinch of cayenne pepper; 1 tablespoon lemon juice; 2 anchovies, finely diced; 2 tablespoons capers, rinsed and finely diced; ½ tablespoon finely chopped thyme; 1 tablespoon each finely chopped dill, parsley, tarragon and chives; flaky sea salt and freshly ground black pepper; MUSSELS; 24–36 greenshell mussels; ½ cup (125ml) white wine; ½ cup (125ml) water; lemon halves, for squeezing; lemon and herb croutons (see recipe), to serve; LEMON & HERB CROUTONS; ½ baguette, crust removed; 1 tablespoon finely chopped thyme; 2 tablespoons finely chopped parsley; finely grated zest of 1 lemon; ¼ cup (60ml) lemon juice; 2 tablespoons melted butter; 1 tablespoon olive oil