Rachel Allen's spinach and mushroom pancakes recipe

Ingredients

• 15 g butter, softened
• 150 g plain flour
• 1 pinch salt
• 200 ml milk
• 2 eggs
• 2 tbsp water
• 25 g butter, now softened
• 1 onion, finely chopped
• 400 g baby spinach
• 225 g mushrooms, sliced
• 100 ml single cream
• 1 tsp freshly chopped parsley
• 1 squeeze of lemon juice
• 1 pinch salt and freshly ground pepper
• 1 sprinkle chopped fresh chives, to garnish (optional)