A sweet potato mash made without milk or cream, mashed with just one type of fat and seasoned with salt and pepper.
Sweet potatoes need little else. Boiled and then mashed, their orange flesh becomes a soft, smooth mash, enriched with just one type of fat and a pinch of salt. No milk or cream needed: the natural sweetness of the vegetable is enough, lifted by a twist of pepper. Simple to make, yet you will soon find yourself coming back for more. This recipe is part of my collection of keto dishes.
What is sweet potato mash?
Sweet potato mash is made from sweet potatoes that are boiled, drained well, then mashed with butter or oil, salt and pepper. The naturally sweet, often orange flesh provides body, fiber and color. Its intensity varies depending on the variety.
Three things determine the texture: cooking the potatoes thoroughly, draining them carefully and using just one type of fat, whether butter, olive oil or coconut oil. The fat adds creaminess and carries the flavors, salt brings out the sweetness without making it cloying, and pepper adds a gentle warmth. Spices play a supporting role, subtly steering the flavor.

What to serve it with
Its sweetness pairs well with bold, savory sauces. Serve it alongside roast poultry, cod in a spicy sauce, roast chicken, green chicken curry or panang beef curry. Olive oil lends itself to Mediterranean dishes, while coconut oil works well with cumin and coriander seasonings.
Main ingredients for the mash
For two servings, allow 250 g of sweet potatoes. The suggestion of “ 2 large or 3 small ” is only approximate, as it all depends on their size. Cutting them into even pieces ensures uniform cooking and makes mashing easier.

- Sweet potatoes: they form the base of the mash, contribute natural sweetness and provide most of its color.
- Butter, 1 spoonful: it adds a mellow dairy richness, a glossy texture and a more indulgent mouthfeel.
- Extra virgin olive oil, 1 spoonful: it brings a vegetal, sometimes grassy note that suits Mediterranean pairings.
- Coconut oil, 1 spoonful: it adds creaminess and an aroma that varies depending on whether it is deodorized, and pairs well with cumin and coriander.
- Salt: a pinch is often enough. Celtic sea salt is not essential.
- Black pepper: 0.25 teaspoon, freshly ground, for a gentle warmth.
- White pepper: for a low-histamine version if you tolerate it; otherwise, the pepper can be omitted.
Spices are optional. Paprika adds color and a mellow flavor, nutmeg brings a woody warmth, coriander seeds add a citrus note, cumin provides depth and onion powder contributes savory roundness, while chili flakes give it a kick. Use cinnamon, oregano and rosemary sparingly to suit the menu, and bear in mind that variations with honey or dates add sugar and carbohydrates.
Technical pointers
Boiling takes 15 to 20 minutes: the tip of a knife should slide into the center of the largest pieces without resistance. Draining carefully, followed by briefly drying the potatoes, prevents a watery mash. Allow approximately 119 kcal and 22 g of net carbs per serving, with 4 g of fiber for the basic recipe. This mash makes a good substitute for mashed potatoes, but it is not strictly ketogenic.

For more low-carb ideas, browse all my keto recipes.

Mashed Sweet Potatoes
Ingredients
- 250 g sweet potatoes 2 large or 3 small
- 1 spoon butter extra virgin olive oil or coconut oil
- 0.25 teaspoon black pepper freshly ground
- generous pinch salt (Celtic sea salt) or to taste
Traditional variation
- 0.5 teaspoon paprika
- 0.25 teaspoon ground nutmeg
Middle Eastern variation
- 1 teaspoon coriander seeds
- 0.5 teaspoon onion powder
- 0.5 teaspoon chili flakes
- 0.25 teaspoon cumin seeds
For a low-histamine version
- a pinch of white pepper if you can tolerate it; otherwise, omit it, NO black pepper
Instructions
- Peel the sweet potatoes. Cut them into pieces. Cook for about 15 to 20 minutes. Once cooked, drain, let them dry out a little, then mash with a little oil, pepper and salt to taste.250 g sweet potatoes, 1 spoon butter, 0.25 teaspoon black pepper, generous pinch salt (Celtic sea salt), 0.5 teaspoon paprika, 0.25 teaspoon ground nutmeg, 1 teaspoon coriander seeds, 0.5 teaspoon onion powder, 0.5 teaspoon chili flakes, 0.25 teaspoon cumin seeds, a pinch of white pepper
- Choose the oil to suit the other dishes on the menu. Coconut oil pairs well with Asian and Middle Eastern flavors. Olive oil pairs well with European Mediterranean flavors.