We challenged chefs of three different skill levels - amateur Onika, home cook Daniel, and professional baker Lani Halliday - founder and owner of Brutus Bakeshop - to make us a sweet and creamy milkshake. Once each level of chef had served up their creation, we asked expert food scientist Rose to explain the choices each made along the way - both good and bad. Which milkshake are you sharing with your date?