She predicts gourmet grilled cheese and grown-up peanut butter and jelly sandwiches as the next middle-class fixation.

FORBES: RIP Cupcakes, Long Live Juice Cleanses? Inside The Fickle Food Trend Bubble

Surprisingly, few companies for whom materials science is their bread-and-butter have yet picked up on the techniques.

ECONOMIST: MONITOR

Other bread-and-butter irritants could crop up.

CNN: U.S. and China: When giants meet

Return in the evening for a bottle of wine or cider in your room, and receive 50% off up to two 90-minute cocoa butter body-wrap treatments at the Vie Day Spa.

BBC: Daily deal: Precious panoramas in Park City

Ask for butter beans up North and you're likely to get a beige-colored bean stew made from dried limas that are soaked, drained then simmered with seasonings.

NPR: Falling in Love with Limas

There is no shortage of members who would like to butter up their clients, but the inefficiency of those guards outside has made stopping by for lunch too time-consuming.

ECONOMIST: Buttonwood