There's a certain segment of McDonald's customers who keep coming back for the restaurant chain's signature sweet tea.

Drinking a 16-ounce bottle of sweet ice tea adds about 160 calories and about ... you can usually find some of the same flavors in a diet version with zero calories. An even better option is ...

Though regular cow butter is used from time to time to make butter tea, yak butter is most common, as it has a richer, less sweet taste (the result of the Himalayan yak diet, which is very grass ...