Why I salt my mashed potatoes, not my boil water (and other mash myths debunked)

Why I salt my mashed potatoes, not my boil water (and other mash myths debunked) is a easy American recipe that serves 4. 410 calories per serving. Recipe by Adam Ragusea on YouTube.

Prep: 17 min | Cook: 22 min | Total: 49 min

Cost: $4.05 total, $1.01 per serving

Ingredients

  • 1000 g Yukon Gold Potatoes (peeled and cut into 2‑inch chunks)
  • 113 g Unsalted Butter (cut into cubes, softened at room temperature)
  • 120 ml Whole Milk (optional – can replace with reserved potato cooking water)
  • 1.5 tsp Kosher Salt (adjust to taste after mashing)
  • 250 ml Cold Water (reserved potato cooking water for flavor)

Instructions

  1. Prep Potatoes

    Peel the Yukon Gold potatoes and cut them into uniform 2‑inch chunks so they cook evenly.

    Time: PT5M

  2. Cold‑Water Start

    Place the potato chunks in a large saucepot and cover with cold water by about 1 inch. Do NOT add salt at this stage.

    Time: PT2M

  3. Boil Potatoes

    Bring the water to a rolling boil over high heat, then reduce to a gentle boil and cook until the potatoes are fork‑tender, about 15‑20 minutes.

    Time: PT20M

    Temperature: 100°C

  4. Reserve Cooking Liquid

    Just before draining, ladle out 1/4 cup (≈60 ml) of the hot cooking water and set aside; this will be used later for flavor.

    Time: PT2M

  5. Drain Potatoes

    Drain the potatoes in a colander, shaking gently to remove excess water but leaving them slightly moist.

    Time: PT2M

  6. Mash and Enrich

    Return the potatoes to the pot or a warm bowl. Add the cubed butter, the reserved cooking water (or milk), and a pinch of salt. Mash until smooth and creamy, about 2‑3 minutes.

    Time: PT5M

  7. Season to Taste

    Taste the mash and add more salt or a splash of milk/cooking water if needed. Mix briefly to incorporate.

    Time: PT1M

  8. Serve

    Transfer the mashed potatoes to a serving dish, optionally top with a pat of butter and a sprinkle of fresh herbs. Serve hot.

    Time: PT1M

    Temperature: hot

Nutrition Facts

Calories
410
Protein
12 g
Carbohydrates
44 g
Fat
21 g
Fiber
5.5 g

Dietary info: vegetarian, gluten‑free

Allergens: milk, butter

Last updated: April 12, 2026

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Why I salt my mashed potatoes, not my boil water (and other mash myths debunked)

Recipe by Adam Ragusea

A simple, science‑backed mashed potato recipe that debunks common myths. Potatoes are boiled unsalted, then finished with butter, a splash of potato cooking water (or milk), and salt added at the end for perfect flavor and texture.

EasyAmericanServes 4

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
5m
Prep
33m
Cook
10m
Cleanup
48m
Total

Cost Breakdown

$4.05
Total cost
$1.01
Per serving

Critical Success Points

  • Season the mash at the end rather than salting the boiling water
  • Reserve a small amount of potato cooking water to add flavor without extra dairy
  • Do not over‑drain the potatoes; retain a little moisture for a smoother texture

Safety Warnings

  • Handle the boiling pot and hot water with oven mitts to avoid burns
  • Steam from the pot can cause scalds; keep face away when lifting the lid

Frequently Asked Questions

Everything you need to know about this recipe

Q

What is the cultural significance and history of mashed potatoes in American cuisine?

A

Mashed potatoes have been a staple comfort food in the United States since the 19th century, originally popularized by European immigrants who brought boiled potato dishes. Over time they became a classic side for Thanksgiving, holiday meals, and everyday family dinners, symbolizing homey, hearty comfort.

cultural
Q

What are the traditional regional variations of mashed potatoes in American cuisine?

A

In the American South, mashed potatoes are often mixed with sour cream or cream cheese for extra tang. In the Northeast, they may include roasted garlic or herbs. Some regions add cheese (e.g., cheddar) or bacon bits for a richer profile.

cultural
Q

How is mashed potatoes traditionally served in the United States?

A

Mashed potatoes are typically served hot as a side dish, often topped with a pat of butter, chopped chives, or gravy. They accompany roasted turkey, meatloaf, fried chicken, and many other main courses.

cultural
Q

What occasions or celebrations is mashed potatoes traditionally associated with in American culture?

A

Mashed potatoes are a centerpiece of Thanksgiving and Christmas dinners, as well as a comforting side for Sunday family meals, potlucks, and holiday gatherings across the United States.

cultural
Q

What makes mashed potatoes special or unique in American cuisine?

A

The dish’s versatility—allowing endless flavor tweaks—and its comforting, creamy texture have made mashed potatoes an iconic American side that bridges regional tastes while remaining universally loved.

cultural
Q

What are the most common mistakes to avoid when making mashed potatoes?

A

Common errors include over‑salting the boiling water instead of seasoning at the end, over‑draining the potatoes which leads to a dry mash, and over‑mixing which can make the potatoes gluey. Also, using the wrong type of potato can affect texture.

technical
Q

Why does this mashed potato recipe use reserved potato cooking water instead of extra milk?

A

The starchy potato water adds pure potato flavor without extra dairy fat, keeping the mash light while still providing the moisture needed for a smooth texture. It also reduces waste compared to adding large amounts of milk.

technical
Q

Can I make this mashed potato recipe ahead of time and how should I store it?

A

Yes, you can refrigerate the mash in an airtight container for up to 3 days. Reheat gently over low heat, adding a splash of milk or butter to restore creaminess. It also freezes well for up to 2 months.

technical
Q

What texture and appearance should I look for when making mashed potatoes?

A

The mash should be smooth, glossy, and free of lumps, with a creamy mouthfeel. It should hold its shape when spooned but melt easily on the tongue.

technical
Q

How do I know when the potatoes are done cooking for this mash?

A

Pierce a piece with a fork; it should slide in with little resistance and the potato should feel soft all the way through. Over‑cooked potatoes will start to fall apart and become water‑logged.

technical
Q

What does the YouTube channel Adam Ragusea specialize in?

A

The YouTube channel Adam Ragusea specializes in science‑based cooking tutorials, recipe development, and food‑culture commentary, often debunking culinary myths with clear explanations and practical demonstrations.

channel
Q

How does the YouTube channel Adam Ragusea's approach to American comfort food differ from other cooking channels?

A

Adam Ragusea combines rigorous food science with a relaxed, conversational style, focusing on why techniques work rather than just showing them. He often tests common kitchen myths, offering evidence‑based recommendations that differ from more tradition‑only approaches.

channel

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