Mashed potatoes are a beloved comfort food, but they can easily turn thick and glue-like if the wrong ingredients are used. The key to achieving a light, fluffy texture lies not in the cooking method but in the choice of dairy. According to Brenda Score, founder of A Farm Girl's Dabbles, swapping cream for buttermilk is the secret to smoother, creamier mash.
Why Buttermilk Works Better Than Cream
Buttermilk, the liquid left over from churning butter, is less fatty than cream and contains lactic acid. This acidity helps break down the starch in potatoes, resulting in a lighter, silkier texture. "Buttermilk adds a bit of tangy flavour as it’s high in lactic acid. It also lends a creamy and slightly thicker texture," Score explains. While cream can make mash greasy and dense, buttermilk brightens the flavours of other ingredients and prevents that heavy, sluggish feeling after eating.
How to Make Buttermilk Mashed Potatoes
For four servings, you will need: 900g of potatoes, 115g of unsalted butter, 120ml of whole buttermilk, four tablespoons of fresh chives, and half a teaspoon of salt. Start by placing the potatoes in a large pot and covering them with cold salted water. Bring to a boil over high heat, then reduce to medium-low and simmer for about 15 minutes, until fork-tender. Drain the potatoes, return them to the pot, and add the butter. Mash until smooth and creamy, then stir in the buttermilk, chives, salt, and pepper to taste.
The Science Behind the Fluff
The acidity in buttermilk not only improves texture but also adds a subtle tang that pairs well with butter. This combination helps create a mash that is both satisfying and easy to digest, allowing you to enjoy a generous portion without feeling bloated. Buttermilk is readily available in the baking aisle of most supermarkets, making this simple swap an easy upgrade for your next batch of mashed potatoes.
