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1
Coat a wide pan with olive oil and bring to a medium-high heat.
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2
Sprinkle the lamb with salt and toss with the flour.
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3
Add the lamb to the pan and brown well on all sides.
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4
Remove the lamb from the pan and reserve.
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5
Ditch the oil in the pan and add a splash new olive oil.
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6
Add the carrots, celery and leeks to the same pan.
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7
Season the mixture with salt and cook, stirring frequently until the vegetables are soft and very aromatic, 8 to 10 minutes.
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8
Add the garlic and cook 2 to 3 minutes more.
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9
Add the tomato paste and cook until the tomato paste starts to brown, 2 to 3 minutes.
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10
Add the beer and cook until it reduces by half.
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11
Return the lamb to the pan.
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12
Add enough stock to just cover the surface of the lamb.
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13
Taste and season with salt if needed.
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14
Toss in the bay leaves and thyme bundle.
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15
Bring the stock to a boil and reduce to a simmer.
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16
Partially cover and simmer until the lamb is tender, about 1 hour.
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17
When the stock level reduces, replace with more to keep the meat submerged.
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18
Place the potatoes in a medium saucepan and cover by 1 inch with tap water.
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19
Season the water with salt and bring the water to a boil.
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20
Boil the potatoes until they are fork tender, about 15 minutes.
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21
Drain the water from the potatoes and pass them while they are still hot through a food mill.
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22
In a small saucepan over medium-high heat, bring the cream to a boil.
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23
Beat the cold butter and hot cream into the pureed potatoes.
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24
Taste and season with salt if needed.
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25
The potatoes should be creamy and very flavorful.
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26
Remove the lid from the lamb and add the peas.
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27
Simmer for 15 minutes more to allow the stock level to reduce.
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28
Taste and adjust the seasoning if needed.
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29
When done, the lamb mixture should be thick and stew-like.
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30
Remove the bay leaves and thyme bundle and discard.
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31
Preheat the broiler.
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32
Transfer the lamb to a wide, flat baking dish.
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33
Spread the mashed potatoes over the lamb mixture in an even layer.
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34
Place the baking dish under the preheated broiler.
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35
Broil until the potatoes are golden brown and crispy.