zucchini - 1.5 kg (1.5 kg)
minced beef - 500 g (500 g)
sweet trahana vlacha - 120 g (120 g)
onion - 1 (small, chopped)
parsley - 1/4 bunch (1/4 bunch, chopped)
dill - 1/4 bunch (1/4 bunch, chopped)
dried oregano - 1 teaspoon (1 teaspoon)
egg - 1 (medium)
olive oil - 2 tablespoons (2 tablespoons)
white wine vinegar - 2 tablespoons (2 tablespoons)
water - 1 liter (1 liter)
vegetable cube - 1 (1)
salt and pepper - to taste (to taste)
egg yolks - 2 (for sauce, 2 medium)
lemon juice - 1 lemon (from 1 lemon)
unsalted butter - 60 g (60 g, for sauce)
all-purpose flour - 60 g (60 g, for sauce)