In a medium bowl, combine coconut flour, hulled hemp seeds and salt. Mix well and set aside. In another medium bowl, whisk egg whites until soft peaks form. Add coconut milk, stevia and grated ginger. Fold until combined. Add dry ingredients and stir for 1 minute, as coconut flour absorbs liquids. If the dough is too dry, add more coconut milk, a tablespoon at a time, until dough begins to come together.