From the outside, Gentle Gourmet Café, near the Gare de Lyon, looks like one of many modern Paris restaurants/cafés. But if you look closely at the menu on the window, you will see some classic dishes like pain perdu, hamburgers, pumpkin soup and salade lyonnaise, with a twist: they are made with all vegetables and no animal products. Gentle Gourmet is the first 100 percent gourmet vegan restaurant in Paris. Owner Deborah Pivain doesn’t advertise or promote the restaurant as vegan, as eating vegan is the norm...