Wash and finely chop all the vegetables. Place them in a deep pot, add water to cover them, then add salt, and bring it to a boil. Remove from the heat and leave the vegetables in hot water for 5 minutes.
Strain the vegetables and season them with all the spices. Place them in a deep baking pan and pour olive oil and lemon juice all over.
Bake the vegetables in the oven for 10 minutes at 150ºC (302ºF). In the meantime, mix the eggs with sour cream and flower of sea salt.
Pour the egg and cream mixture all over the vegetables and bake for another 15 minutes.
Before cutting the cake, let it cool down halfway. Combine it with fish or meat, or alternatively have it as the main dish with the addition of goat cheese.