Have you ever wondered what to do with the biscuits you want to dunk in your tea? Here is the solution: the dunk mug. Put a stack of biscuits in the slot at the bottom the mug while drinking. You have left- and right-handed versions. I saw those yesterday and bought a couple today: a lilac left-handed for myself and a mint right-handed for visitors. The other good thing about those mugs is that the bottom stays cool because it is not in direct contact with the liquid.