Ingredients

Steps

• Pre-heat the oven to 220°C.
• Heat oil in a pan and sauté the sliced onion for 2 minutes.
• Add the beef to the pan and cook until golden brown.
• Pour ale into the pan with carrots and parsnips and cook for 6 minutes.
• Simmer milk, cream, and lemon zest in a separate pan.
• Add the potatoes to the cream mixture and cook for 8 minutes.
• Transfer the potato mixture to a dish and bake for 10 minutes until golden.
• Serve the beef mixture alongside the gratin potatoes.