A few drops of Worcestershire saucefor that umami kick
Method
Melt the butteradd the onion, diced carrots and mushrooms and cook over a slow heat for 5 minutes. Add the flour and cook until brown.
Add the Worcester Sauce.
Add the stockbring to the boil. Add the tomato purée, chopped parsley, thyme leaves, salt and pepper and simmer for 5 minutes.
Fry the lamb until brownedadd to the sauce, bring to the boil. Taste and correct seasoning.
Mash the potatoes after boiling for 10 minutesadd the egg and some butter, mash again.
Put in a pie dishcover with the mashed potatoes, and score with a fork. Sprinkle over the cheese and dot with garlic butter.
Place in a preheated oven at 180ºC for about 30 minutes until hot and bubbling. Garnish with parsley and serve with extra garlic butter melting into the potatoes.
You canif so inclined add some tomato ketchup to the sauce mix, to bring a touch of sweetness, but I leave that to you.
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