Ingredient

potato

Also known as: Fingerling or new potatoes, Red Potatoes, Yukon Potatoes, new potatoes, potatoes [2 large russets = 4 cups], small red potatoes

A starchy root vegetable, sold in many varieties (russet, red, Yukon Gold, fingerling, etc.) that differ in starchiness and texture; boiled, roasted, fried, mashed, or baked.

Buying guidance

Yukon Gold or another yellow-fleshed, thin-skinned potato is the most versatile choice: starchy enough to mash into a creamy thickener, waxy enough that unmashed pieces don't vanish entirely. Choose firm potatoes with no sprouts and no green tinge -- green skin means solanine, and should be cut away generously or the potato discarded.

Substitutions

  • Russet or baking potatoes -- higher starch; they thicken beautifully but disintegrate, which is ideal in a stew and wrong in a salad.
  • Red or new potatoes -- waxy; they hold their shape and resist mashing.
  • Sweet potato -- a different and noticeably sweeter dish, not a like-for-like swap.

Tips & common mistakes

Overworking potatoes once they're cooked and mashed -- with an electric mixer, a food processor, or too much vigorous stirring -- ruptures their starch cells and turns them gluey and pasty instead of light and fluffy. Mash by hand with a masher or ricer and stop as soon as they're smooth.

Storage

Keep whole raw potatoes out of the refrigerator -- cold temperatures convert some of their starch to sugar, which makes them taste sweeter than intended and turns fried or roasted potatoes darker and less crisp. A cool, dark cupboard keeps them longer without that effect.

More specific

Used in 15 recipes