BERLIN, Dec 10 (Reuters) - Grocery delivery start-up Flink has raised $750 million in an additional funding round, it said on Friday, giving the German company the funds to further expand and cash in on the home food delivery boom. Flink is one of several food delivery start-ups, including Gorillas, Getir, and Weezy, that have grown rapidly during the COVID-19 pandemic by delivering groceries within minutes of an order being placed via smartphone app. Its Series B funding round was led by U.S. tech firm Doordash in September, and also included investors such as Mubadala Capital, part of Abu Dhabi"s sovereign wealth fund. The money would be used to expand its operations. The privately-held company currenctly has more than 140 delivery hubs in over 60 cities, reaching up to 10 million customers, with Germany and the Netherlands its largest markets. "We are just getting started as we receive daily questions from people who ask, when they can reach our services," said founder Oliver Merkel. Reporting by Riham Alkousaa, editing by John Revill