A new book by master sommelier Mark Oldman dares to discuss the undiscussable: Sometimes you should buy the cheapest bottle on the wine list.

Why? Diners tend to order the second or third cheapest wine on the menu, for fear of looking like Cheapy McCheaperson. Wine directors and sommeliers are one step ahead of this and will often mark up those selections on the list, or slot them with an overstocked wine. So what you often end up buying is actually the worst value on the list.

Well played, you sneaky sommeliers.

Instead, according to Oldman, you're better off ordering the cheapest wine, "which diners often neglect out of fear or embarrassment and thus is often a better value."

For other tips on how to make the most of your drinking experience, check out Oldman's entertaining and informative book, How to Drink Like a Billionaire: Mastering Wine with Joie de Vivre (Regan Arts, 2016).