Answer:
The correct answer is A. When making French onion soup, the onions had to be sweated and caramelized.
Step-by-step explanation:
Onion soup is a soup made from broth and onion. It is made by frying the onion and quenching it with beef broth. The soup is served with croutons with grated cheese on top. To melt the cheese well, the soup can be put in the oven or under a salamander.
The typical taste does not come from the broth but from the caramelization of the sugars in the onion rings that are released during fruiting.
The soup was already eaten in the time of the Romans. At the time, it was seen as a soup for the poor population, because onions were cheap and were common.