Fučka: Slovak mashed potatoes with flour and fried onions

Name: Fučka: Slovak mashed potatoes with flour and fried onions
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Yield: 4 servings
Cuisine: Slovak
Ingredients: 800 g Potatoes; as needed Water; to taste Salt; 400 g Onions (or fried bacon); as needed Vegetable oil; 1 tbsp Butter; 4 tbsp All-purpose flour (fine wheat flour); 4 glasses Soured milk (clabbered milk) (cold)

Fučka, a traditional Slovak dish of potatoes mashed in their cooking water and thickened with flour, served with fried onions or bacon.

Slovak cuisine · Translated from Slovak · October 24, 2026

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Recipe at a glance

Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Servings: 4 servings
Difficulty: Easy
Cuisine: Slovak

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Fučka is a traditional Slovak dish of potatoes boiled until soft, mashed right in the water they were cooked in and thickened with all-purpose flour. The thick mash is enriched with a spoonful of butter and served topped with onions fried until golden, or with bacon. Pickled cabbage goes well with it as a side. It is a simple, filling dish made from a few inexpensive ingredients.

Ingredients

Potatoes 800 g
Water as needed
Salt to taste
Onions (or fried bacon) 400 g
Vegetable oil as needed
Butter 1 tbsp
All-purpose flour (fine wheat flour) 4 tbsp

For serving

Soured milk (clabbered milk) (cold) 4 glasses

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Instructions

Tip: tap a step to mark it as done.

Peel and chop the potatoes. Add just enough water to barely cover them, season with salt and boil until soft.
Peel the onions, chop them finely and fry them in a moderate amount of oil until golden brown.
Mash the cooked potatoes thoroughly right in the water they were cooked in.
Return the pot to the heat, add the butter and melt it into the mash, stirring constantly.
Add the flour and cook the mash thoroughly, stirring constantly, until it starts to puff, that is, until bubbles form and burst on the surface. Add more salt as needed.
Serve the mash as a main dish, generously topped with the fried onions, with a glass of cold soured milk (similar to buttermilk).

Tip: A mash thickened with flour scorches easily, so when you cook it through, stir with a wooden spoon all the way to the bottom of the pot. If it gets too thick, thin it with a little hot water.

Nutrition facts

Approximate values per serving, calculated from the ingredients

Energy: 383 kcal
Protein: 15 g
Carbohydrates: 64 g
of which sugars: 18 g
Fat: 7.8 g
of which saturates: 4.5 g
Fiber: 6.2 g
Salt: 0.8 g

Calculated from the raw ingredients, without frying oil. Where an amount is “to taste”, typical amounts are used. Food composition: USDA FoodData Central and product labels.

This recipe was translated from the Slovak original: Fučka – zemiaková kaša s múkou a opraženou cibuľou