Proper hygiene is very important when it comes to food preparation. Without washing hands and kitchen tools, diseases may easily spread. Importance of cleanliness related to food starts with the preparation of food. The raw substances used for cooking should be washed thoroughly with water before being cooked. Greater attention is needed for something which would be consumed raw, as salads or fruits. If possible, they should be cleaned with hot water. This is because there is risk of contamination of the vegetables or fruits with soil containing infectious germs.