Combine the rum or orange juice with the mixed peel and dried fruit. Set aside for at least 1 hour or up to overnight. Alternatively, candy your own citrus peel using this recipe.
Combine the milk and sugar in a small saucepan. Heat on low until the mixture reaches 100-110°F then remove from heat and stir in the yeast. Set aside for 10-15 minutes or until the yeast becomes frothy.
In the bowl of a stand mixer, place the gfJules Flour, salt, cardamom, nutmeg, and cinnamon. Mix on low with a paddle attachment until integrated.
Add the soft butter, eggs, zest, and vanilla. Add the frothy yeast mixture. Mix on medium/low for 2-3 minutes.
Fold in the mixed fruit/peel mixture. If the mixed fruit/peel has not absorbed all of the rum or orange juice, drain and do not add the remaining rum/juice to the batter.
Mix on low until the fruit/peel is thoroughly distributed throughout the batter. The batter may seem a little sticky.
Lightly flour a clean counter or pastry mat. Scrape the dough out onto the mat. Lightly flour your hands and shape the dough into an oval loaf. For a more traditional shaped stollen, use the edge of your hand to make a deep groove down the length of the loaf just off center from the top of the loaf (see photos above recipe card).
Transfer to a parchment-lined baking sheet. Cover the loaf with a lightly oiled piece of plastic wrap.
Allow the loaf to rise in a warm location for 1 hour.
When there is about 20 minutes of rise time left, preheat the oven to 350°F.
Remove the plastic wrap and bake the loaf for 50-60 minutes. The loaf should be deeply browned and the internal temperature should read at least 190°F.
Remove the loaf from the oven and allow it to cool.
To finish the loaf, melt 1 additional tablespoon of butter in a small bowl. Use a toothpick to poke small holes all over the loaf. Brush the loaf generously with the melted butter.
Sift powdered sugar generously over the entire loaf. Slice and serve!
Store leftovers in an airtight container at room temperature for 4-5 days.