Mashed Potatoes

Variations

• Garlic mash: Warm garlic in the milk to infuse it.
• Cheesy mash: Melt in cheddar or Parmesan for richness.
• Sour cream mash: Use sour cream for a tangy, creamy version.
• Rustic mash: Mash skin-on for a country style.

Tips

• Starchy potatoes (russet) are the fluffiest; waxy ones can turn gluey.
• Steam off the moisture after boiling for a smooth, non-watery mash.
• Add the butter and milk warm so they blend in silky-smooth.
• Don't overmix — working the starch too much makes it pasty.
• What "pasty" actually is. Potato cells are cemented to one another by pectin, and boiling softens that cement so they come apart. Mash gently and you are separating whole swollen cells, which is what reads as fluffy. Shear them and amylose leaks out of the ruptured cells into the liquid and tangles into long chains — that is the glue.
• So the tool matters more than the effort. A ricer or a food mill pushes the cells apart without shearing them, which is why it is nearly impossible to make gluey mash with one. A food processor is the opposite: it is the only tool that reliably produces paste.
• Floury and waxy is the same distinction, one step earlier. Floury potatoes have larger starch granules and less pectin holding the cells together, so they separate readily. Waxy ones hold their corners, which is what German Potato Salad needs and this dish does not.
• Butter before milk. Fat coats the separated cells and effectively waterproofs them, so they take up less of the milk and stay light. Cold milk sets that butter before it can spread (cooking oils), which is the real reason for warming it.
• Two dishes here want the glue. Aligot beats mash hot for ten minutes specifically to draw those amylose chains out, and Pav Bhaji uses a masher on purpose so the burst starch gives a body that mounds on a spoon.