Hachette have very kindly sponsored your mugs, amongst many other things, for the 2019.dayofcode.co.uk. Your mug has this artwork on it:
Type in the code on the mug and you'll be able to run it. This repo extends the functionality of Mug so you can do even more with it!
On the terminal command prompt, type
irb
And then
require_relative "mug"
Then you can try the following
mug = Mug.new
mug.use
mug.fill_with(beverage: "iced tea")
mug.sip
mug.glug