Dishonest advertising by big business

<p>Since when is it legal to advertise that the content of a tub of Ola Ice Cream is 2 liter but there is only 1.8 liter of ice cream in the tub? I think this is a very dishonest practice. If you wanted to save 200ml on each tub of ice cream and still charge for 2 liter at least have the decency to change the label to reflect the lesser content.</p>