Gâteau au chocolat avec chantilly au mascarpone
milk (about 240 ml) • sugar (about 200 grams) • vegetable oil (about 240 ml) • cocoa powder (about 60 grams) • eggs • all-purpose flour (about 125 grams) • baking powder (about 1 teaspoon or 5 grams) • mascarpone (125 grams) • heavy cream, very cold (125 grams) • powdered sugar (30 grams)