A quick Google gave me this overview of the first 9 documents you'll need ( and which Amt is responsible) https://www.arag.de/auf-ins-leben/selbststaendigkeit/food-truck-genehmigungen-und-vorschriften/?cookieSetting=true     https://translate.google.de/translate?hl=&sl=auto&tl=en&u=https%3A%2F%2Fwww.arag.de%2Fauf-ins-leben%2Fselbststaendigkeit%2Ffood-truck-genehmigungen-und-vorschriften%2F   G-Translate makes it look like this, but you may have to G-translate yourself, as clicking the link forces a cookie question   Of course in Hamburg, some are Bezirk (District) and some are for the State of Hamburg.   Name of the document Where can I get the document? Business license for restaurateurs Business registration office Tax registration form Automatically from the tax office by post after registration of the trade Health certificate Health department Health permit Regulatory office Food hygiene training according to EU regulation (EG) First instruction at the health department Instruction according to Section 43 Infection Protection Act (IfSG) First instruction at the health department, follow-up instruction every 2 years by the employer Proof of information for the catering trade Chamber of Commerce and Industry Immission approval Trade inspection Dispensing permit or permission Commercial registration office of the local community