Greek Fish en papillote with oregano and lemon in 25 min.

Name: Greek Fish en papillote with oregano and lemon in 25 min.
Cuisine: European, Mediterranean, Greek
Ingredients: (for 2 or 4 people, depending on the menu); 1 whole fish 700-800 gr. cleaned – we used 1 sea bass labelled Fish from Greece; 5-6 sprigs of oregano or 1.5-2 tsp dry; 1/2 lemon cut into thin slices; sea salt and freshly ground pepper; 2 tbsp. (1 line) of extra virgin olive oil; For the Greek lemon and olive oil sauce (ladolemono), and the serving; juice and zest of 1 lemon; equivalent or more (from lemon) extra virgin Greek olive oil