Miracle fruit, also known by many other names such as miracle berry, miracle tree, miraculous berry, miracle berry, and magic fruit, is an evergreen shrub that can also be trained as a standard tree. It is known for its berry that, when eaten, causes sour foods subsequently consumed to taste sweet. The effect lasts for 2 hours and works best on acidic foods such as citrus and tomatoes or bitter foods like dark chocolate and coffee. The berries are great for diabetics because they are a natural way to make foods sweet without adding any sugar.