India, Sept. 5 -- When you order a burger, fries often come almost instinctively. This pairing has existed for so long that a burger without crispy fries may simply feel incomplete. So, why have fries become the default companion to burgers? In another Everyday Explained episode, we explore the reasons behind this classic pairing. ALSO READ: Everyday explained: Why do ceiling fans usually have three blades? Here's the science behind it

We asked Dhruv Kohli, founder and CEO of Boba Bhai, which serves Korean burgers, why this happens. Most of the time, we do not think twice before ordering fries with a burger, but this seemingly automatic choice is influenced by texture, flavour, familiarity and habit.

Here are the three reasons:

The fir...