2 two pounds lobsters
1 bouquet garni
1 big onion - cut into 8 parts
1 tablespoon whole black peppercorns
1 tablespoon salt
2 lemons - quartered
8 cups water
1 bottle white dry wine
1/2 cup melted butter
1/2 cup all-purpose flour
1 cup milk - 2%
1 cup white dry wine like chardonnay or pinot noir
2 tablespoons Dijon mustard
2 tablespoons chopped fresh tarragon
sliced button mushrooms or champignons
1/4 cup butter
olive oil
parmesan cheese - 1/2 cup plus 1 tablespoon
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