Tech boffins have created a counter-top dishwasher which is the same size as a microwave - and can even cook lobsters.<br /><br />Tetra, which has a cycle of just a few minutes, can be used to wash dishes, sterilise bottles and boil seafood - and uses less water than normal washing up.<br /><br />The innovative machine, made by Heatworks, will cost less than £220 and is due for release at the end of this year.