Legal analysis: you can use the following methods to protect your rights:

1, once you find the dish is not clean, immediately without saying a word, immediately pick up the phone to the foreign body to a close-up close-up, and then the store environment is also photographed in, more than a few are fine, try to take the store's name, trademarks are photographed inside the lens.

2, be sure to keep the evidence of the scene tableware, do not let the store pour or change.

3, turn on the recording function of the phone, and then call the person in charge of the store over, pay attention to the person in charge of the call, call the waiter can not make a decision, first let them give a reasonable explanation, and let them take the initiative to support the compensation program.

Legal basis: "Food Safety Law" Article 122 Violation of the provisions of this law, without obtaining a food production and management license to engage in food production and management activities, or without obtaining a food additive production license to engage in food additive production activities, by the people's government at or above the county level of the supervision and management of food safety confiscate the illegal income and illegal production and operation of food, food additives, as well as for the illegal production of tools, equipment, raw materials. Production and management of tools, equipment, raw materials and other items; illegal production and management of food, food additives less than 10,000 yuan in value, and impose a fine of 50,000 yuan or more than 100,000 yuan; value of 10,000 yuan or more, and impose a fine of 10 times the amount of 10 times the amount of 20 times the amount of the fine.

Knowingly engaged in the preceding paragraph of the illegal behavior, but still provide production and management premises or other conditions, by the people's government at or above the county level food safety supervision and management department shall order the cessation of illegal behavior, confiscate the illegal income and impose a fine of more than 50,000 yuan of less than 100,000 yuan; so that the legitimate rights and interests of consumers have been harmed, should be jointly and severally liable with the production and operation of food, food additives.