“A milkshake is not a frappe.” Born and raised Bay Staters may know exactly what Parrish means by that, but for those not from Massachusetts and New England, the mind probably reels.

If you’re planning to order a blended drink of milk and ice cream in New England, the drink you may be searching for may not be a “milkshake." The reason why has to do with our regional history.

Your next trip to McDonald's just might be a whole lot sweeter. Here's everything you need to know about the chain's latest frappé.