Make the dough by mixing yeast, sugar, eggs, yolks, vanilla, brandy, and water in a stand mixer with a dough hook on low for 3 minutes. Add flour, salt, and butter, then knead on medium speed until smooth, about 5 minutes. Wrap and refrigerate for 1 hour.
Divide dough into 1.4 ounces/40-gram portions. Roll into tight balls, place on a parchment-lined tray, and loosely cover. Let rise in a warm spot until doubled.
Heat oil to 350°F/175°C. Carefully fry each donut for 2–3 minutes per side. Remove and cool.
For the filling, bring berry purées, cream, and mascarpone to a simmer. Whisk sugar, egg yolks, cornstarch, and vanilla in a bowl, then gradually pour in hot mixture while whisking. Return to the pan, cook on medium until thickened and bubbling. Pour over chocolate and blend with an immersion blender. Add butter and blend. Press plastic wrap on the surface and chill until ready.
Melt chocolate with oil over a bain-marie for the coating.
Whip cream with pudding powder, powdered sugar, and raspberry powder until stable. Transfer to a piping bag with a medium French star tip.
Fill each donut from the top with berry cream using a #3 (7 mm) round tip. Dip halfway into chocolate. Sprinkle with meringue and freeze-dried berries. Pipe a Chantilly rosette and finish with more meringue and berries. Dust lightly with powdered sugar.