When we dream, we fall into a realm of our own; an alternate reality where it portrays a world of endless desires. Interpreting a dream such as the subconscious appetite, we must look at this matter from three basic angles.
The first possibility is both a mental and physical side of hunger which can be related to your body craving for food. The second possibility has most to do with other details and surrounding of the dream. Dreams sometimes use puns when they are portrayed. Look around and see what it is that you crave so much for. It may be related to sex, power, wealth or fame. Each of these desires varies by the person's lifestyle and here are some examples with more details:
Sex can be represented by knife, snake or phallus. Power could be seen as ventriloquism, unicorns and business suits. The wealth can be viewed as treasure, money and smile. A fame can be shown to be a star or a stage all in your dream.
Last but not least, the final and main perspective on such symbolism can be thought of as a superstitious one. It is believed that the hungrier you get, the brighter your future. It is also however thought that, to desire nourishment especially that of a fruit or fruits, it predicts a possibility of pregnancy.
If it is a lack of appetite that you experience, the following views can be expected. The first implies that you simply ate way too much before retiring for the day. The second entails contentment. And the third suggests an unchanging, consistent lifestyle.