Whisk in cream, thyme, and pepper. Set aside. Using a mandoline, thinly slice potatoes lengthwise into 1/16-inch-thick slices. Add sweet potatoes to cream mixture; toss gently to coat.

How Many Pounds Of Potatoes To Buy Per Person The rule of thumb is a half pound of potatoes per person. This should ensure everyone gets plenty of mashed potatoes, with minimal leftovers. Luckily this ...