Preheat the oven to 350 degrees F and line a standard loaf pan with parchment paper.
In a glass measuring cup or small bowl, add the soy milk, ground flaxseeds and apple cider vinegar. Whisk vigorously with a fork to combine, then let sit for 2 minutes to thicken and curdle.
In a large bowl, add the molasses, melted vegan butter, brown sugar, orange zest and vanilla. Whisk very well to combine. Now whisk in the milk mixture.
To the wet ingredients, add the flour, baking soda, baking powder, ginger, cinnamon, cloves and salt. Stir with a large wooden spoon or spatula until just combined, being careful not to over mix.
Pour into the prepared pan and bake for 45-55 minutes, until a toothpick inserted in the center comes out clean.
Let it cool in the pan for 10-15 minutes, then transfer to a cooling rack to cool completely before frosting.
Make the frosting - Add the vegan cream cheese, vanilla and powdered sugar to a medium sized bowl. With a hand mixer, beat everything together starting on low speed and increasing to high until creamy and smooth. Add the tablespoon of milk if needed to thin.
Spread a thick layer of frosting on top of the cooled loaf and sprinkle with chopped walnuts, orange zest, pomegranate or cranberries, if desired. Slice, serve and enjoy!