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1
If necessary, tie the veal with cotton string, so that it resembles a salami.
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2
Place the meat in a heavy-bottomed pot or Dutch oven and cover with tuna, onion, celery, carrot, bay leaf, parsley, wine, broth, salt and pepper, then heat over a high flame until it comes to a boil.
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3
Immediately reduce heat to very low, cover and simmer for 35 to 40 minutes, or until the internal temperature of the veal reaches 130 degrees.
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4
Remove meat to a large, nonreactive bowl, strain the broth over it, cover and allow the meat to cool in the refrigerator.
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5
(Discard solids.)
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6
Meanwhile, put yolks in a medium bowl.
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7
Beat together with a wire whisk.
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8
Begin to add oil as you beat, a very little at a time, adding more as each bit is incorporated.
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9
When a thick emulsion forms, then you can add oil a little faster, but not much faster.
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10
The entire process should take roughly 5 to 7 minutes.
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11
(You may not need all the oil.)
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12
Add tuna, anchovies and caper brine to the mixture, then beat to incorporate.
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13
Add a few tablespoons of the veal broth to thin the sauce slightly.
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14
Taste and adjust seasoning, adding lemon juice or more broth to taste.
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15
The sauce should not taste overly mayonnaisey but should lurk in the neighborhood.
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16
Remove the cooled veal from its broth, untie and cut across the grain into very thin slices.
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17
Arrange these neatly on a platter with the edges of the slices overlapping, and spoon the tuna sauce over the top.
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18
Cover and return to refrigerator overnight or until ready to use.
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19
Garnish with capers or fried capers, lemon, hard-cooked egg wedges or sprigs of parsley.
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20
Serve with copious amounts of bread and a green salad, lightly dressed.