Starbucks longs for the days when cafes were for sitting and sipping. But the growth of some competitors is a reminder that there's still money to be made in serving hot drinks quickly.

Starbucks introduced its lauded cold foam over a decade ago, yet some may wonder how the chain whips up this topping. Turns out, it's not too complicated.

"It reminds me of Captain Spauldings in House of 1000 Corpses !" 😆 ...