The signature challenge for Series 6, Episode 2 of The Great British Bake Off is to make two dozen biscotti. Biscotti are traditionally an Italian cookie distinct for its twice-baked hard exterior. Fillings are somewhat variable. An eastern European Jewish variation of biscotti is called mandelbrodt. Mandelbrodt literally translates to English as "almond bread". Except for when I make mandelbrodt for my aunt, who is allergic to all nuts, I always include almonds and some almond extract. These biscuits are very hardy and are a good, easy crowd-pleaser. The recipe which I use calls for oil rather than butter, making them pareve (neither dairy nor meat). They are good to serve as a dessert for a crowd, or are good to bring as a snack on road trips. Due to the fact that they are rather hard, they do not easily go stale, and will stay fresh for a while. For once, I will not disclose the recipe which I used. The recipe is, I believe, my great-great-grandmother's; it