Dynamic content for Ice Cream Parlour

Hi all,

I am looking for the following:

I am building a website for an ice cream parlor.
They want to show their flavors on a display.
However, the content must be dynamic, if they decide to replace the lemon with grapefruit, they should be able to change the content immediately.
Is there a solution within WordPress to build this?
Something like a list of all their flavors, and the can activate the current flavors by radio buttons.
The website must show the new content without refreshing.

Hope there’s some genius over here who can help me!

Thanks in advance,

Herman
The Netherlands