If there's a true test of any relationship, the series opener of The Domestics tackles the important matters first: do you put the milk, or the bag in first, when making a cup of tea?

During a break in filming on Katherine's new lifestyle show, The Good Life With Katherine Ryan, the domestic duo have their first barney over a very British brew, but you'll have to watch to find out who's on which side. And see what cows, rainforests and methane have to do with it all, because there's also an environmental disaster brewing, and that's just the colour of Joel's tea!

Will the pun-tastic pals settle their differences and agree to get oolang?