In a large bowl, whisk warm water, warm milk, and sugar until dissolved. Stir in yeast and powdered ginger (if using). Let sit for 5–10 minutes until foamy.
Stir in 1 cup of flour, then add salt and oil. Gradually mix in the remaining flour until the dough pulls away from the bowl.
Knead for 5 minutes with a stand mixer or 8–10 minutes by hand until smooth and elastic. If too sticky, add flour 1 tablespoon at a time.
Place the dough in a greased bowl, cover, and let rise in a warm spot for 1 hour until doubled.
Punch down the dough, knead for 3 minutes, then divide and shape into two loaves. Place in greased 9×5-inch pans and brush with melted butter.
Let the dough rise for 30 minutes until it reaches 1 inch above the pan.
Preheat the oven to 350°F (175°C). Bake for 30 minutes until golden brown and hollow-sounding when tapped.
Remove from pans and cool on a wire rack for at least 20 minutes before slicing. Enjoy with butter, honey, or jam!