Dough 7 grams / 2 1/4 teaspoons instant yeast 250 milliliters / 1 cup whole milk, lukewarm 70 grams / 5 tablespoon superfine/caster sugar 564 grams / 3 1/2 cups plain flour 1/2 teaspoon sea or kosher salt 2 eggs, room temperature 110 grams / 3.9 ounces butter, softened Filling 250 grams quark or cottage cheese 1 egg, room temperature 14 grams / 1 tablespoon superfine/caster sugar 20 grams / 2 tablespoons raisins 338 grams / 1 cup plum or apricot jam 1 egg, room temperature and lightly beaten Streusal topping (optional) 100 grams / 1/2 cup superfine/caster sugar 100 grams / 2/3 cup - 1 teaspoon plain flour 100 grams / 3.5 ounces butter, softened - Place the milk, 1 tablespoon of the sugar and yeast into a large bowl and whisk to combine. - Set aside to activate for 5