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1
Make the brioche: Cream together the butter, sugar, and salt in a large bowl.
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2
Add the flour and beat until the mixture resembles small peas.
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3
In a small saucepan, heat the milk to lukewarm.
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4
Remove from the heat and stir in the yeast.
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5
Set aside until foamy, 5 to 10 minutes.
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6
(If the yeast doesnt foam, start over with fresh milk and yeast.)
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7
Add the yeast mixture to the flour mixture and stir well.
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8
Add the beaten eggs.
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9
If you have a mixer with a dough hook, process at low speed for 10 minutes.
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10
If you are mixing by hand, beat until the dough has a sheen and pulls away from the sides of the bowl into a rough ball.
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11
Add more flour if the dough is too sticky.
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12
Remove to a clean bowl, cover, and set aside in a warm place to rise until doubled in bulk, 3 hours.
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13
Punch down the dough.
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14
Cover and refrigerate until doubled in bulk, overnight.
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15
Preheat the oven to 350F.
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16
Remove the dough from the bowl and allow to soften for about 15 minutes.
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17
With a sharp knife, cut the dough into 4 pieces.
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18
Roll out each piece into a cigar shape on a lightly floured board.
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19
Wind each brioche into a tight coil and press the seam closed with your fingertips.
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20
Bake on baking tiles or a baking sheet until the bottoms sound hollow when tapped, 50 minutes.
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21
Cool on a wire rack.
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22
Make the lemon mayonnaise: In a small bowl, whisk together the egg yolks, mustard, and lemon juice until thick.
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23
Add the oil drop by drop, whisking constantly, until the mayonnaise begins to emulsify.
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24
At this point the remaining oil can be added in a thin stream, until the mayonnaise is thick.
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25
Fold in the lemon zest and season with salt and pepper.
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26
Cover and refrigerate for at least 1 hour, or until you are ready to proceed with the rest of the recipe.
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27
Assemble the sandwiches: Slice each brioche lengthwise into 4 even slices.
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28
Toast lightly.
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29
Spread mayonnaise on each toasted slice.
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30
Layer each bottom slice with the lettuce, then the tomato, bacon, and lobster.
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31
Top with a slice of toast and repeat the layering 2 more times to make 4 triple-decker sandwiches.