Preheat Oven: preheat your oven to 180°C (350°F). Grease a donut pan.
Acid Mix: in a small bowl, mix the plant-based milk and apple cider vinegar. Let sit for 5 minutes.
Dry Ingredients: in a large bowl, mix the flour, sugar, baking powder, and salt.
Wet Ingredients: in another bowl, mix the melted coconut oil, lemon zest, lemon juice, ginger, and the acidified plant-based milk.
Combination: add the wet ingredients to the dry ingredients and mix until you get a homogeneous dough.
Fill the Molds: pour the dough into the donut molds, filling them 3/4 full.
Baking: bake for 12-15 minutes or until a toothpick comes out clean.
Glaze: while the donuts are cooling, prepare the glaze. Mix the powdered sugar, lemon juice, and grated fresh ginger (if using) until smooth.
Finishing: once the donuts have cooled, dip the top into the lemon and ginger glaze.