The steps to upload a food license for Shake Shack are as follows:

Log in to the backstage of Shake Shack, and click on "Commodity Management"-"Commodity Qualification".

On the product qualification page, select the product category you want to upload, such as food.

Click "Add Qualification" and select the appropriate food license.

Upload a scanned copy or photo of the food license.

Confirm that the uploaded food license information is correct and click "Submit for Review".

It is important to note that the uploaded food license must be authentic and valid, otherwise it may result in a failure of the audit or relevant penalties.

In summary, you can upload a food license in Shake Shack through the above steps.

Legal basis:

According to the Food Safety Law of the People's Republic of China (PRC) and the E-Commerce Law of the People's Republic of China (PRC), merchants engaging in food production and business activities must obtain the appropriate food business licenses, which will be made public on the platform of their business activities. Therefore, as an e-commerce platform, Jitterbug Little Shop requires merchants to upload food business licenses as its legal obligation. Merchants who do not obtain a food business license or who forge, alter or fraudulently use a food business license to engage in business activities may be subject to legal penalties.