Ginger oil can vary in color from pale yellow to a darker amber color and the viscosity also ranges from medium to watery. It is a strong smelling oil - spicy, sharp, warm and with a hint of lemon and pepper, which smells of actual ginger.Asian medicine uses dried ginger for stomach problems such as stomach-ache, diarrhea, and nausea. The Chinese also use it to boost the heart and to help with mucus and phlegm.