Grilled Salmon with broccoli

1 1/2 tablespoons fresh lemon juice , divided 1 1/2 teaspoons italian seasoning, divided 2 teaspoons olive oil 1/2 teaspoon lemon zest , finely grated 3[...]

1 tablespoon olive oil , plus extra for brushing 2 tablespoons onions , chopped 2 garlic cloves , crushed 400 ml tomato passata or 400 ml canned chopped[...]