This theme has always been popular for cakes. Now imagine a cake you can make really easily and pick up like a real tankard. You can choose to make a pewter version or dimpled glass look to your cake. ( or why not make a giant mig of tea or coffee!) 
 
As with all of Dawn's cake kits, there is a full-length  free tutorial which can be watched here: 
 
https://dinkydoodle-designs-learning-zone.teachable.com/p/pick-up-beer-mug?preview=logged_out