What are les escargots?

It is ususally cooked vegetables that you can eat with garlic or spicy sauces : potatoes, courgettes, or rice. It is not a mainstay of French cuisine, and they're really popular with tourists only. If you want to eat some French cuisine, just go in plain-looking restaurants in places where there are less tourists.
fried in garlic butter or any spicy sauce (otherwise they have no specific taste) plus a serving of vegetables or rice. This is not really popular in France except for restaurants catering to tourists.