Preheat oven to 325 F.
Cream butter and sugar. Add in eggs one at a time.
Combine the soda, salt, and flour.
Add half of the dry mix in and mix.
Pour in the buttermilk and mix.
Add in the remaining dry ingredients.
Stir in the orange and the ginger.
Pour into either 2 loaf pans, a bundt cake mold, muffin tins, or two 6 inch cake tins.
Bake until a toothpick comes out clean. Times will vary greatly for different vessels. The 6 inch cake tins took about 30 minutes, where the loaf tin took just over an hour. I'd assume a bundt cake would take about an hour and muffins would take about 25-30 minutes.