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1
Preheat oven to 500 or 525 degrees.
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2
Have the meat cutter hack away the chine bone of each rack.
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3
Take care that all scraps of meat and bone are reserved.
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4
Cut the chine bones into two-inch pieces and set aside.
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5
There is a top coating of fat on top of each rack.
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6
At one side of each rack there is a small, cartilage like half-moon-shaped shoulder blade between the meat and the top coating of fat.
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7
Have this removed.
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8
Using a sharp knife, make deep diamond-shaped scorings down to the bottom of the top layer of fat.
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9
Neatly trim the bottom of each rib to make them French style, which is to say neatly trimmed of all meat and fat.
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10
They should be trimmed about one inch from the bottom.
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11
Sprinkle the racks with salt and pepper and cover the French-style ends of the chops with aluminum foil to prevent burning.
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12
Scatter the scraps of meat and bones over the bottom of a shallow roasting pan large enough to hold the racks in one layer.
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13
Scatter the thyme and garlic cloves over the scraps.
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14
Arrange the racks, fat side up, in the baking dish.
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15
Put two tablespoons of the butter on top of each rack.
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16
Put the lamb in the oven and bake 20 minutes.
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17
Turn the racks and continue roasting about 15 minutes.
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18
Transfer the racks to a warm platter.
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19
Put the roasting pan on top of the stove and heat the pan liquids.
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20
Add the water.
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21
Let simmer 10 minutes.
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22
Meanwhile, remove the garlic cloves and remove the outer coatings.
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23
Chop the garlic to a fine puree and set aside.
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24
Beat the whites until stiff.
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25
Add the parsley, green peppercorns and mustard.
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26
Blend well.
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27
Discard the foil from the lamb racks.
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28
Smear half the beaten white mixture on top of each rack.
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29
Sprinkle each rack with an equal amount of the bread crumbs.
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30
Pat the crumbs lightly to make them adhere.
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31
Melt the remaining three tablespoons of butter in a small saucepan.
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32
Dribble the butter on top of the racks.
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33
Return the lamb to the oven and bake about five minutes or less until the top of lamb coating starts to brown.
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34
Place the lamb briefly under the broiler to give a nice brown glaze.
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35
Strain the pan juices from the roasting pan into a saucepan.
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36
Add the reserved chopped garlic.
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37
Stir and reheat briefly.
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38
Carve the lamb, slicing between each two ribs, and serve with pan juices.