What are cookies on the interwebz?
A cookie acts as a short-term memory for the web and is a file containing a string of letters and numbers (known as the identifier) that is sent by a web server to a web browser and is stored by the browser. The identifier is then sent back to the server each time the browser requests a page from the server. Cookies can be used by web servers to identity and track users as they navigate different pages on a website and identify users returning to a website, but cookies do not contain any information that personally identifies you.
Cookies actually make your web experience better, but the EU says we should disclose on our website.