Chef Joost
Andijviestamppot
The Dutch trick is not cooking the andijvie at all: let the hot potatoes do the work, so the greens soften, stay bright, and keep their clean bitter bite.
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Friese Sipelstamp
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The name says it plainly: sipel is Frisian for onion, stamp is the mash, and together they make the northern weeknight dish a beppe knew by heart.
Main Dishes
Dutch
Weeknight
Budget Friendly
One Pot
15 min
Active Time
35 min cook•50 min total
Yield4 servings
In the old family kitchens of Friesland, the grandest thing on the table was often the onion. Not because anyone was trying to be grand, for obvious reasons, but because a slow onion knows how to make thrift taste generous. Potatoes filled the pot, onions sweetened in butter beside them, and a little nagelkaas, clove cheese, brought the northern spice cupboard to heel.
The name already tells you almost everything. Sipel is Frisian for onion, and stamp is the Dutch family of mashed dishes, from stampen, to mash or pound. But let me tell you a secret: this is not a poor cousin of stamppot. Friesland is its own kitchen, with its own language, its own dairy pride, and its own stern little miracles. One of them is nagelkaas, cheese pricked through with cloves and often cumin, so a simple onion mash suddenly smells faintly of winter markets and old trade routes.
The method asks for patience in the one place that matters. Don't brown the onions hard; soften them until they slump and turn honeyed at the edges. That sweetness is the dish. Mash the potatoes roughly, fold the onions through, let the cheese melt in pockets rather than disappear completely, and make a kuiltje, a little well, for the butter or mustardy pan juices. Hou het altijd simpel. The table will understand.
Friese sipelstamp belongs to the northern Dutch stamppot tradition, where potatoes were mashed with stored vegetables through the cold months, especially onions, cabbage, carrots, and leeks. Its Frisian name preserves the regional identity plainly: sipel means onion in West Frisian, a living language rather than a kitchen ornament. The finish with nagelkaas connects the dish to Friesland's dairy history, particularly the clove-scented cheeses associated with the northern provinces since the early modern spice trade made cloves familiar in Dutch kitchens.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
floury potatoes
Quantity
1.2kg
peeled and cut into even chunks
yellow onions
Quantity
600g
thinly sliced
butter
Quantity
50g, plus extra for serving
whole milk
Quantity
150ml
warmed
Frisian nagelkaas
Quantity
150g
grated or finely diced
Dutch mustard
Quantity
2 teaspoons
bay leaf
Quantity
1
salt and freshly ground black pepper
Quantity
to taste
ground nutmeg (optional)
Quantity
small pinch
| Ingredient | Quantity |
|---|---|
| floury potatoespeeled and cut into even chunks | 1.2kg |
| yellow onionsthinly sliced | 600g |
| butter | 50g, plus extra for serving |
| whole milkwarmed | 150ml |
| Frisian nagelkaasgrated or finely diced | 150g |
| Dutch mustard | 2 teaspoons |
| bay leaf | 1 |
| salt and freshly ground black pepper | to taste |
| ground nutmeg (optional) | small pinch |
Equipment Needed
- •Large pot
- •Wide heavy frying pan
- •Potato masher
- •Wooden spoon
Instructions
- 1
Boil the potatoes
Put the potatoes in a large pot, cover with cold water, salt it properly, and add the bay leaf. Bring to a boil and cook for 18 to 22 minutes, until a knife goes through without argument. Remove the bay leaf before draining; it has done its quiet work.
- 2
Soften the onions
While the potatoes cook, melt the butter in a wide pan over medium-low heat. Add the onions with a good pinch of salt and cook slowly for 25 to 30 minutes, stirring now and then, until they are soft, glossy, and sweet at the edges. If they catch too quickly, lower the heat. You want gold and patience, not a bitter brown scolding.
A splash of water in the pan helps loosen any buttery onion sweetness stuck to the bottom. Don't waste that. It belongs in the mash. - 3
Mash roughly
Drain the potatoes well and let them sit in the hot pot for a minute so the surface dries. Mash them with the warm milk, mustard, black pepper, and the pinch of nutmeg if using. Keep the texture a little rough; sipelstamp should look like food made by hands, not forced through a machine.
- 4
Fold in onions
Scrape the softened onions and all their butter into the potatoes. Fold rather than beat, so the onions stay visible in sweet ribbons through the mash. Taste for salt now, because the cheese will bring its own.
- 5
Finish with cheese
Fold in most of the nagelkaas while the mash is still hot, leaving a little for the top. Let it melt in small pockets, with the cloves and cumin scenting the potatoes. Spoon into a warm bowl, scatter over the last cheese, and make a kuiltje, a little well, for a knob of butter if the evening deserves it.
Chef Tips
- •Use floury potatoes, not waxy ones. You want the potatoes to drink the milk and onion butter; a waxy potato stays neat when the dish asks to be generous.
- •Nagelkaas matters here. If you can't find it, use a mature Gouda with a tiny pinch of ground clove and cumin stirred through, but go carefully. Clove is a church bell, not a violin.
- •For a vegan version, use good olive oil or plant butter, oat milk, and leave out the cheese. Add a spoon of mustard and a pinch of toasted cumin for backbone, and don't pretend it is the same dish. It is a good relative.
- •Serve with pickled beetroot, cucumber in vinegar, or a sharp apple salad. Sweet onion and potato like something sour beside them.
Advance Preparation
- •The onions can be cooked a day ahead and refrigerated; warm them gently before folding into the potatoes.
- •Leftovers keep for two days refrigerated. Reheat slowly in a covered pan with a splash of milk, stirring from the bottom so the cheese does not scorch.
Frequently Asked Questions
Nutrition Information
1 serving (about 445g)
Calories
480 calories
Total Fat
17 g
Saturated Fat
10 g
Trans Fat
1 g
Unsaturated Fat
5 g
Cholesterol
55 mg
Sodium
950 mg
Total Carbohydrates
69 g
Dietary Fiber
8 g
Sugars
13 g
Protein
17 g
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