Quick and Easy 30 Minute Roast Lamb with Garlic Mash | What Dad Cooked

Ingredients

• 1 half leg joint of lamb with bone – about 850 – 1kg OR 4 lamb neck fillets – about 850g – 1 kg
• 200g unsmoked bacon lardons
• 1 large onion or equivalent shallots
• 2 sticks of celery
• 6 cloves of garlic unpeeled
• 1 or 2 tins of flagelolet beans (drained 530g)
• 1 kg King Edward potatoes
• 500 ml chicken stock
• 2 tbs white wine vinegar
• 1 tsp dried tarragon
• Store cupboard: salt, pepper, olive oil, butter, milk