Sauce "bearnez"
Cook the milk sauce: sautéed in oil (50 g), dilute 500 g of hot milk, cook for 8-10 minutes, strain. Pour wine and vinegar into the dishes, put the bay leaf, grated zest, parsley root, part of the tarragon, spring onions, pepper and cook until evaporated 3/4 of the liquid. Then combine with the finished milk sauce, boil, strain, season with egg liaison (a mixture of yolks and milk), add butter, chopped parsley and tarragon greens. Warm up to 70 ° С. Salt the sauce, season with pepper and citric acid.
flour - 50 g, milk - 900 g, white table wine - 200g, vinegar 3% - 200g, bay leaf - 1 pc., lemon zest - 10 g, tarragon leaves - 40g, parsley root - 40g, parsley greens - 5 g, green onions - 50 g, butter - 100 g, yolk - 4 pcs., citric acid - 1 g, salt to taste, pepper to taste