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
Prep Potatoes
Peel the Yukon Gold potatoes and cut them into uniform 2‑inch chunks so they cook evenly.
Time: PT5M
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
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
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
Drain Potatoes
Drain the potatoes in a colander, shaking gently to remove excess water but leaving them slightly moist.
Time: PT2M
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
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
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
Ingredient Substitutions
- Instead of Yukon Gold Potatoes: Russet potatoes, red potatoes
- Instead of Unsalted Butter: margarine, ghee
- Instead of Whole Milk: half‑and‑half, cream, powdered milk (reconstituted)
- Instead of Kosher Salt: sea salt, table salt (use less)
- Instead of Cold Water: milk, cream
Equipment Needed
- Large Saucepot
- Colander
- Potato Masher or Ricer
- Measuring Cups and Spoons
- Kitchen Scale (optional)
- Large Mixing Bowl
- Wooden Spoon or Spatula
- Timer
Critical Steps — Do Not Skip
- 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
Chef Tips from the Video
- Use Yukon Gold potatoes for their naturally buttery flavor and creamy texture
- Warm the butter before adding it to the potatoes to prevent it from solidifying
- Reserve the starchy cooking water before draining – it’s the secret to extra potato flavor
- Season with salt after mashing so you can taste and adjust precisely
Troubleshooting
Mash is watery
Add more butter or a pinch of powdered milk; mash longer to evaporate excess liquid.
Mash is dry or grainy
Incorporate additional warm milk or reserved potato water a tablespoon at a time until smooth.
Lumps remain
Pass the potatoes through a ricer or use a hand mixer on low speed; avoid over‑mixing which can make them gluey.
Potatoes over‑boiled and falling apart
Reduce boiling time; test with a fork early and remove as soon as tender.
Storage
Refrigerator: Store in an airtight container for up to 3 days; reheat gently with a splash of milk or water.
Freezer: Mashed potatoes can be frozen for up to 2 months; thaw and reheat, adding extra liquid to restore creaminess.
Room temperature: Do not leave at room temperature for more than 2 hours.
Make-Ahead Tips
- Mashed potatoes keep well refrigerated; reheat over low heat and stir in a tablespoon of butter or milk to revive texture
- For freezer storage, portion into zip‑top bags, flatten, and label with date
Frequently Asked Questions
What is the cultural significance and history of mashed potatoes in American cuisine?
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.
What are the traditional regional variations of mashed potatoes in American cuisine?
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.
How is mashed potatoes traditionally served in the United States?
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.
What occasions or celebrations is mashed potatoes traditionally associated with in American culture?
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.
What makes mashed potatoes special or unique in American cuisine?
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.
What are the most common mistakes to avoid when making mashed potatoes?
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.
Why does this mashed potato recipe use reserved potato cooking water instead of extra milk?
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.
Can I make this mashed potato recipe ahead of time and how should I store it?
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.
What texture and appearance should I look for when making mashed potatoes?
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.
How do I know when the potatoes are done cooking for this mash?
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.
What does the YouTube channel Adam Ragusea specialize in?
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.
How does the YouTube channel Adam Ragusea's approach to American comfort food differ from other cooking channels?
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.
Last updated: August 25, 2026
