Semlor: Cardamom Buns With Almond Paste

King Adolf Fredrik of Sweden died on 12 February 1771, and the Swedish national memory has settled on the cause with unusual specificity: he ate fourteen semlor. The full menu that evening at Stockholm Palace included lobster, caviar, sauerkraut, smoked herring and champagne, so the buns had help. But the story stuck, the king is remembered chiefly for it, and Swedish schoolchildren still learn the phrase kungen som åt ihjäl sig — the king who ate himself to death.

The bun in question is a cardamom-scented wheat bun, hollowed out, filled with a paste of its own crumb and almond, capped with a snowdrift of whipped cream, lidded and dusted. It is eaten in February, in enormous quantities, and it is one of the few pastries in Europe that eats part of itself.

Fettisdagen, and a bun that outlasted its reason

Semlor exist because of Lent. The word descends through semla from the Latin simila, fine wheat flour — the same root that gives German Semmel — and the original bun was a plain wheat roll eaten on Shrove Tuesday, fettisdagen or “fat Tuesday”, as the last legitimate indulgence before forty days of restriction. Eaten in hot milk it became hetvägg, from the German heisse wecken, hot wedges, and this is still how older Swedes prefer them: the bun in a bowl, hot milk poured over, cinnamon on top.

Then Sweden went Lutheran and stopped observing Lent, and the bun stayed. It kept accreting. Almond paste arrived in the eighteenth century, the whipped cream sometime in the nineteenth or twentieth depending on whose account you believe, and by the mid-twentieth century a semla was the elaborate cream-topped construction we recognise. Somewhere in that process the religious calendar detached entirely.

The current situation would horrify a Lutheran reformer. Swedish bakeries begin selling semlor shortly after Christmas, and Swedes eat somewhere in the region of 40 million of them a year in a country of 10 million people. The Church of Sweden has occasionally grumbled. Nobody has stopped.

The pastry-industrial complexity has also generated a semla arms race — semla wraps, semla layer cakes, semla in a burger bun — which is exactly the sort of thing that happens when a seasonal food becomes a national event. The traditional article remains better than any of it.

The cardamom, and why you must grind it

This is the argument I will not lose. Buy green cardamom pods, split them, take out the small black seeds, and crush those seeds in a mortar immediately before the dough is mixed. Never use pre-ground.

The reason is straightforward chemistry. Cardamom’s aroma comes largely from 1,8-cineole and α-terpinyl acetate, both of which are highly volatile — cineole in particular evaporates readily at room temperature. Inside an intact pod, the seeds are sealed and the oils are stable for years. The moment you grind, the surface area explodes and the volatiles begin leaving. A jar of ground cardamom that has been open three months has lost most of what you paid for, and what remains is the woody, faintly soapy background without the bright top note that makes cardamom worth using.

Twenty-five pods yields roughly two teaspoons of seeds, which crushes down to a coarse, slightly damp, intensely fragrant powder. Coarse is correct — you want visible dark flecks in the crumb and occasional small bursts of aroma, which a fine powder does not deliver. A mortar and pestle takes ninety seconds. The same principle drives kanelbullar and every other Swedish sweet dough worth eating.

The dough

This is a rich, slow, butter-heavy dough with about 25% butter to flour, and it needs handling accordingly.

Add the butter after the gluten has begun to form. If you put 150 g of fat in at the start, it coats the flour proteins and physically obstructs them from linking into gluten, and you end up kneading for twenty-five minutes to get a structure that would have taken eight. Five minutes of plain kneading first, then butter in five additions, then eight to ten minutes more. The dough will look broken and greasy after each addition and will come back together; this is normal and you must keep going.

Fresh yeast is traditional and gives a rounder flavour with less of the yeasty top note. Instant dried is entirely acceptable at roughly a third of the weight. Whichever you use, 37°C milk — blood temperature, no hotter. Yeast begins dying above about 50°C and the milk feels deceptively mild at that point.

The finished dough should be glossy and pass a rough windowpane test: a stretched piece should go translucent before it tears. Underdeveloped dough gives a bun that is dense and slightly crumbly, which matters here because the bun has to hold a hollow shell without collapsing.

Shaping, and why the ball must be tight

Ninety-five grams per bun, and shape each one properly: cup your hand over the dough on an unfloured surface and move it in tight circles so the ball drags against the counter and the surface tightens into a taut skin.

That skin is structural. It contains the oven spring and gives you a bun that rises upward into a dome rather than spreading into a disc. A slack ball produces a flat bun with a fragile shell, and a fragile shell tears when you scoop it out. Every part of this recipe is in service of a bun you can hollow.

The filling, and the crumb trick

This is the part that people skip and it is the part that makes a semla.

The filling is the bun’s own interior crumb, mashed with grated almond paste and enough milk to make it spreadable. Almond paste on its own is the supermarket shortcut, and it produces a filling that is dense, aggressively sweet and marzipan-like. Adding the crumb back does three things: it lightens the texture to something closer to a soft frangipane, it dilutes the sugar to a level where you can eat a whole bun, and it stops the waste of throwing away a hundred grams of good bread.

Grate the almond paste on the coarse side of a box grater. A block of paste mashed whole will stay in lumps; grated, it distributes in about thirty seconds of forking.

Use a paste that is at least 50% almond, ideally more. British “marzipan” is often 25% almond and the rest sugar and glucose, which will make the filling sickly. The Swedish product is mandelmassa and Nordic shops carry it; Odense and Niederegger are both good. Failing that, blitz 200 g of blanched almonds with 150 g of icing sugar and an egg white.

The 80 ml of milk is a starting point. You want a paste that holds a shape on a spoon and yields to gentle pressure — thicker than a batter, looser than putty.

Assembly and timing

Cool the buns completely. A warm bun will melt the cream on contact and the whole thing slumps within a minute.

Cut the lid with a small serrated knife held at about 45 degrees, cutting a shallow cone. This gives you a lid with a lip that sits back neatly and a cavity with sloping sides that holds filling.

Whip the cream to firm peaks — you need it to stand up to a lid resting on it, and slightly under-whipped cream will collapse under the weight within twenty minutes. Stop when the whisk leaves clear tracks that hold their shape. Overwhipped cream turns grainy and eventually becomes butter, and there is no going back.

Assemble within four hours of eating. Semlor go stale fast and a filled bun refrigerated overnight is a sad object — the cream weeps, the shell goes leathery and the filling dries. If you need to get ahead, bake and hollow the buns on the day, freeze the shells for up to a month, and fill on the day itself. The cardamom bun family behaves the same way.

Where it goes wrong

Dense, heavy buns. Under-kneaded dough, or the butter went in too early. A rich dough needs visible gloss and a rough windowpane before it proves; if it tears immediately when stretched, keep kneading. The other candidate is an under-proved second rise — the buns should look inflated and a poked indent should fill back only halfway.

The shell tore during hollowing. Either the buns were still warm, or the second prove ran long enough that the crumb went too open and fragile. Cool for a full hour, and cut with a serrated knife using a sawing motion rather than pressing.

The cream is weeping. Under-whipped, or the buns were assembled too far ahead. Cream held at firm peaks will stand for four hours; soft peaks give you about forty minutes before the water starts separating out of the fat network.

Pale buns. The oven was under temperature or the egg wash was thin. 220°C is high for a rich dough and deliberately so — you want colour in ten minutes, because a longer bake at a lower temperature dries the crumb you are about to mash into the filling.

No cardamom flavour. You used the jar. I did warn you.

The filling is sickly. Low-almond marzipan. Check the packet — anything under 50% almond is a sugar product. Push the crumb ratio up and add a pinch of salt, which will help, though it will not rescue it entirely.

The case against

A semla is roughly 450 calories of butter, cream, sugar and almond in a fist-sized package, and it does not pretend otherwise. It was designed as the last meal before six weeks of fasting, and eating them from Boxing Day to Easter — as modern Sweden does — is a habit that has entirely lost its alibi. Adolf Fredrik’s fourteen is played for laughs, but two in a sitting is genuinely a lot.

The construction is also fussy in a way that resists any shortcut. There is a rich dough with a two-hour prove, a bake, a full hour of cooling, a hollowing operation done twelve times with a small knife, a filling to mash and spoon back, and cream to whip and pipe — and the result has a four-hour shelf life. Measured as effort per hour of edibility, semlor are the worst-value bake in the Nordic repertoire. This is why Swedes overwhelmingly buy them, and why the good bakeries in Stockholm have queues down the pavement in February.

Make them once and you will understand both the queue and the king.

Hetvägg, for the traditionalists

Skip the cream entirely. Put a filled bun in a deep bowl, pour over 150 ml of hot milk, dust with cinnamon, and eat with a spoon. This is the older form, it is what your Swedish grandmother-in-law will ask for, and on a February evening it is arguably the better dish.

Fourteen of them is still too many.