In a cup, heat ¾ cup milk until lukewarm, then stir in 1 teaspoon granulated sugar and 1 ½ teaspoons active dry yeast. Place the cup in a warm spot and let it rest for about 15 minutes, until the mixture is foamy and bubbles form on the surface.
In a large bowl, combine 3 cups all-purpose flour, ½ cup granulated sugar, ¼ teaspoon salt, ½ teaspoon vanilla extract, 1 Tablespoon lemon zest, ¾ stick unsalted butter (softened), and 2 egg yolks. Add the yeast mixture, including the milk, and mix to form a dough.
Make the dough: Using a wooden spoon, roughly mix the ingredients in the bowl until they come together. Transfer the dough mass to a work surface and sprinkle a small handful of flour on the side. Knead the dough until it becomes soft and smooth, dipping it into the flour as needed if it sticks.
Add 2 Tablespoons almonds (roughly chopped) and 2 ½ Tablespoons raisins to the dough and knead them in until evenly distributed.
Place the dough back into the bowl, cover it with plastic wrap, and let it rise in a warm spot for about 1 ½ hours or until doubled in size.
Knead the dough briefly, shape it into a round loaf, and place it seam side down on a baking sheet lined with parchment paper. Let it rise in a warm place for another hour.
Make two cross-shaped cuts on the surface of the loaf—a regular razor blade works well, or use a pair of scissors. Whisk ½ egg with a fork and brush Mazanec on all sides. Sprinkle the top with 1 Tablespoon sliced almonds.
Place the cake in an oven preheated to
360 °F (upper and lower heat) and bake for 35 minutes. If the top begins to brown too quickly, loosely cover it with foil.