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1. Food preparation: The preparation of hamburgers, fried chicken and other foods requires washing, thawing and cooking with water. In particular, the production of fried chicken and other foods that need high-temperature frying requires a lot of water to ensure the quality and hygiene of food.

2. cleanliness: keeping restaurants clean and hygienic is the basic requirement of the catering industry. Hamburg stores need to clean and disinfect the floor, desktop and kitchen equipment of the restaurant regularly to ensure a clean and hygienic dining environment for customers.

3. Hand washing of employees: employees need to wash their hands frequently during food preparation to ensure the hygiene and safety of food. In addition, employees also need to wash their hands before and after work to maintain personal hygiene.