Summary
The video discusses the unique formula and storage method for Coca Cola at McDonald's, which results in a better tasting Coke and Diet Coke. McDonald's takes steps to ensure the quality of their fountain beverages by pre-chilling the water and syrup, and maintaining a balanced syrup-to-ice ratio. There are differences in taste between McDonald's and In-N-Out burgers, with McDonald's burgers being sweeter. Both McDonald's and In-N-Out have secret menu items, and there is a viral trend involving the Grimace milkshake at McDonald's.