5. No person shall sell any food with a label, whether or not attached to or printed on the wrapper or container, which bears, comprises or includes any reserved description or any derivative thereof or any word or description substantially similar thereto unless–
(a)such food is the designated product to which the reserved description relates;
(b)such description, derivative or word is used in such a context as to indicate explicitly or by clear implication that the substance to which it relates is only an ingredient of that food; or
(c)such description, derivative or word is used in such a context as to indicate explicitly or by clear implication that such food is not and does not contain a designated product.