Equipment • Stand mixer (optional) • Tart rings • Baking mat • Dough roller • Rulers (optional), for thickness • Brush, for coating Shortcrust pastry202g Wheat flour13g Cornstarch (optional, it makes the tart more crispy)35g Cocoa powder2g Salt125g Diced butter (softened)69g Icing sugar1 Whole egg1. Put flour, cornstarch, cocoa, icing sugar, salt and butter into the bowl of a stand mixer.2. Mix at low speed with a paddle until you reach a sandy texture.3. Add the egg and mix increasing the…