11 psychological tricks restaurants use to make you spend more money

When you head to a restaurant, you might have your heart - or stomach - set on a particular dish.

Or, you might be a little more open to suggestion.

That's the opportunity menu engineers and consultants are looking for. Behind the scenes, before you're even thinking of dinner, they put careful thought into the way you choose what foods you eat.

Here are 11 of the sneakiest psychological tricks restaurants use to make you spend more money: