Milk has nutrients that make it suitable for the rapid multiplication of bacteria that cause spoilage. Unhygienic production, poor handling and undesirable practices such as addition of water or other substances can introduce bacteria or germs that cause spoilage. The resulting wastage can make you lose profits that you would have otherwise made. Unhygienic handling may introduce disease-causing bacteria into the milk and this can also adversely affect human health. In addition, regulatory authorities will likely require that you undergo a training course that covers the contents of this guide before they issue you with a licence to trade in milk. This course is therefore designed to provide.