A plate of chilled klappertaart served with young coconut and walnuts
Prep30 min
Cook35 min
Serves4 small dishes
CuisineIndonesian (Manado, North Sulawesi)

Klappertaart: Manado's Young Coconut Custard Dessert

Klappertaart is a custard dessert with young coconut from Manado, North Sulawesi. How rich to make the coconut milk, how to cook the egg, and how to brown the meringue, adjusted for small baking dishes, with ingredient substitutes, storage, how to recover when it goes wrong and how to choose coconut products.

Total: 3 hr 5 minLevel: Intermediate

Cooking flow

Cooking steps

STEP 11 / 5

Prepare the flesh and fillings

10 min

Preparing young coconut cut into strips, with raisins and coarsely chopped walnuts set out
Press off the moisture of the flesh, rehydrate the raisins and chop the walnuts to leave bits

Cut 200 g young coconut flesh into strips 4 mm wide and 3–4 cm long, and press off the moisture of frozen flesh after thawing. Soak 30 g raisins for 10 minutes in hot water or 5 ml rum, and chop 30 g walnuts to 2–4 mm. If no juice collects on the plate and no drops fall when you lift the flesh, it is in a state where the custard is less likely to turn watery.

STEP 22 / 5

Combine the custard liquid in a cold pot

8 min

The coconut-milk custard being stirred in a pot over medium-low heat, with the spatula leaving a trail
Do not boil; turn off the heat at a thickness where the spatula trail stays briefly

In a bowl mix 2 egg yolks, 70 g sugar, 35 g cornstarch and 1 g salt, and add 150 ml milk, 200 ml coconut milk and 100 ml coconut water little by little. Mix until the liquid is white and even with no grains of flour left and the whisk's streaks flow and disappear. Move to a pot, add 1/2 cinnamon stick and the tied pandan, and stir the bottom constantly for 8–10 minutes over medium-low heat. Turn off the heat when the spatula's trail stays for 2 seconds and before big boiling bubbles appear, mix in 25 g butter and 5 ml vanilla, and remove the aromatics.

STEP 33 / 5

Layer the flesh and custard in the dishes

8 min

Layering young coconut, raisins, walnuts and custard in a baking dish
Pour to 1 cm below the rim, and work the custard in among the fillings

Divide half of the flesh, raisins and walnuts among the 4 baking dishes and pour in the warm custard. Stop 1 cm below the surface, scatter the remaining flesh and fillings and lightly sink them with a spoon. Rest 10 minutes to let the steam from the surface escape, and check that the liquid is not separating from the sides of the dish. If you pack in too many fillings, the custard cracks when it chills.

STEP 44 / 5

Whip the meringue and put it on top

8 min

Spreading glossy meringue with a spoon over the custard in small baking dishes
When the tips of the whites stand and the surface is glossy, put them on at an even thickness

In an oil-free bowl whip 2 egg whites on medium speed, and when the white foam becomes fine add 5 ml lemon juice. Add 35 g sugar in 3 additions and whip for 6–8 minutes until the tip lifted on the whisk does not bend and the surface is glossy. Put it evenly on the dishes, spreading to the rim in a thin mound. Egg whites with yolk or water in them do not rise well, so use a separate bowl when separating.

STEP 55 / 5

Bake, chill, and decide the serving temperature

35 min

Klappertaart with the meringue baked in a 160°C oven, only the surface lightly colored
Call it done when the surface is pale and a slight tremble remains in the center

Bake on the middle rack at 160°C (325°F) for 20–25 minutes and stop where the surface of the meringue is pale golden and the center trembles slowly. If you can confirm that the center has reached 71°C (160°F) as an egg dish, put the temperature first; if you cannot, still bake until the liquid custard does not run. Let it release heat at room temperature within 30 minutes, then cover and chill in the refrigerator for 2 hours.

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Ingredients

Ingredients

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Ingredients

Ingredient Amount Substitutes & notes
Young coconut flesh 200 g Substitute unsweetened frozen. Cut into strips 3–4 cm long
Unsweetened coconut milk 200 ml Shake the can well before use. Do not scoop only the thick part
Milk 150 ml To avoid dairy, unsweetened oat milk can substitute
Unsweetened coconut water 100 ml You may replace it with 100 ml water, but the aroma is a little thinner
Granulated sugar 70 g The same amount of cane sugar. Limit dark brown sugar to 30 g
Cornstarch 35 g The frame of the custard. Potato starch alone changes the texture
Egg yolks 2 yolks, about 36 g The whites go to the meringue. This is not a formula with leftover yolks
Unsalted butter 25 g Add after turning off the heat
Salt 1 g Tightens the sweetness and coconut aroma
Raisins 30 g Soaking 10 minutes in 5 ml rum brings out the aroma. For children, rehydrate in hot water
Walnuts 30 g Almonds, 30 g, also work. Chop to 2–4 mm
Cinnamon stick 1/2 stick Infuse the custard with its aroma and remove
Pandan leaf 1 leaf, about 15 cm Tie and simmer if you have it. Omit if not
Vanilla extract 5 ml To help the aroma when omitting the pandan
Egg whites 2 whites, about 60 g Use in a bowl with no water or oil
Granulated sugar, for the meringue 35 g Add in 3 additions
Lemon juice 5 ml Tightens the meringue. 1 g cream of tartar also works
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A Cold Manado Coconut Sweet Where the Spoon Breaks the Surface

Put a spoon into chilled klappertaart and first you meet the light resistance of the meringue, and under it the egg custard slowly appears. Inside the white custard are hidden long strips of young coconut, sweet-and-sour raisins and the small crunch of walnuts.

Klappertaart is a sweet tied to Manado in North Sulawesi, Indonesia. It is introduced as a sweet with Dutch influence, with young coconut as the star, layered with egg, milk, nuts and raisins. It is not a sweet that is carried by the heat of just-baked alone; its outline comes together including the time to let the heat out and then chill it.

What gives pause when making it at home is not finding local young coconut but where to stop the moisture of the custard. Adding more canned coconut milk makes the aroma stronger, but too much leaves the center loose even after baking. So I divide it into 4 small baking dishes and, keeping the coconut aroma, aim for a firmness you can scoop with a spoon once chilled.

Even within Indonesia, unlike nasi uduk, which carries the aroma into rice, in klappertaart the judgment of how much coconut moisture and how much to set with egg is the star. If you want to widen to flour sweets of eastern Indonesia, try bagea next, and to compare the texture of sweet snacks, serabi.

How to decide in this article

If you want a fuller aroma, use 200 ml unsweetened coconut milk and add young coconut flesh that has been drained.

Do not boil the custard; turn off the heat where the trail of the spatula stays for about 2 seconds.

On a day you cannot spare the chilling time, you can leave out the meringue and serve it warm, but do not change the cooking of the egg or the storage conditions.

Ingredients: Makes 4 Small Baking Dishes

The ingredients laid out: young coconut, coconut milk, milk, eggs, cornstarch, raisins, walnuts and cinnamon
Unsweetened coconut milk and drained young coconut decide the aroma and texture of the custard

Use four 180–200 ml baking dishes. If you have no fresh young coconut, thaw unsweetened frozen coconut in the refrigerator and press off the surface moisture with paper towels. Sweetened candied coconut changes the sweetness and moisture, so it is not suited to this formula.

It contains egg, dairy and walnuts. Processed coconut milk and nut products may carry labeling for soy, wheat and so on, depending on the product, so if you have an allergy check the ingredients and the same-facility labeling when buying.

Shopping: A Can for the Aroma Base, Flesh for the Texture

A shopping scene with a can of unsweetened coconut milk, young coconut flesh, raisins and walnuts beside small baking dishes
What is worth looking for online is unsweetened coconut milk and ingredients that can make up the texture of young coconut

Fresh young coconut flesh cannot always be bought. Without fresh flesh, unsweetened frozen is fine, but if you leave out even the coconut milk, the flavor of milk and egg comes forward and it becomes a different custard. What is worth buying here is that even if you use half of a 400 ml can, the rest can go to curries and rice dishes, and that you can check "unsweetened" and the ingredient label before buying. If you already have thick coconut milk in the refrigerator and are making a small batch just this once, you do not need to buy new.

When you choose, check for a content of 400 ml, whether it is unsweetened, and whether the ingredients include any sweetener other than coconut.

Move the rest of the opened can to another clean container and refrigerate it following the can's label. Handling after opening differs by product, so rather than fixing the number of days of storage here, put the label, the smell and the condition first.

Method: Cook the Custard, Then Bake the Meringue

Rather than putting it in the oven from the start to set, klappertaart is easier to adjust if you build the thickness of the custard in a pot and then bake. Preheat the oven to 160°C (325°F) and grease the inside of the baking dishes with a little butter.

Just baked, the custard is soft and the shape easily falls apart when scooped with a spoon. If serving it warm, confirm that the heat has gone to the center and the meringue has set, then rest it for 15 minutes. If you choose a cold finish, not skipping the 2 hours in the refrigerator is what separates the fine fibers of the flesh from the smoothness of the custard.

Cooking Tips: Do Not Add Moisture, and Keep One Line of Aroma

A comparison of finished klappertaart: set custard, loose custard and meringue browned too dark
Looking separately at the custard's trail, the tremble of the center and the color of the meringue makes it easier to pinpoint where it went wrong

Cans of coconut milk may have the thick part settled at the bottom. Shaking well before opening and mixing with the milk before it goes into the pot keeps the fat from being rich at first and watery in the latter half.

Rather than scattering cinnamon powder through the whole, simmering a stick briefly and removing it does not hide the coconut aroma. Choose the stick when you will reuse it for chai and baked goods and want to be able to stop the strength of the aroma partway. If you have powder that still carries aroma and are making this just once, skip it.

What happened Main cause Quick fix
The custard runs even when chilled The flesh has too much moisture, or it was undercooked Dissolve 5 g cornstarch in 15 ml cold milk, return to the pot and stir 2–3 minutes over low heat
The custard is heavy and breaks It was boiled, or too much starch Turn off the heat, add 10 ml warm milk and slowly thin with a whisk
The meringue weeps water Oil in the bowl, or sugar added too early Whip the whites in an oil-free bowl and add sugar in 3 additions. Bake right after topping
Only the surface gets dark Strong top heat, or the dish is on the upper rack Move to the middle rack, cover the surface loosely with foil and bake to the center at 160°C (325°F)
The flesh feels hard Not young coconut, or cut too thick Cut to 4 mm wide, and use frozen only after completely thawing

Even if the taste seems weak, you do not necessarily add sugar first. Check in the order of: salt missing, cinnamon simmered too long, or the coconut milk having separated, and you can bring the aroma back without increasing sweetness.

Changes at the Table: Chilled or Served Warm

Chilled klappertaart scooped with a spoon, set with warm tea and young coconut
Chilled, the custard firms, and with a warm drink the coconut aroma returns

With klappertaart, changing just the serving temperature, rather than the ingredients, changes the impression. Cold, the boundary between custard and flesh is clear; slightly warm, the aroma of butter and coconut spreads. It is not a question of which is right; choose by whether you serve a small portion after a meal or gather around it just baked.

Variation Amount and steps Result
Replace fresh flesh with frozen Thaw 200 g unsweetened frozen flesh in the refrigerator and press off moisture A little milder in aroma, but the texture is easy to keep
Use pandan Tie 15 cm, add when simmering the custard and remove at the end A greener, sweeter aroma than vanilla
Omit the rum Soak the raisins in hot water for 10 minutes Easier to eat with children, with fruit sweetness coming forward
Replace walnuts with almonds The same 30 g chopped to 2–4 mm Lighter savoriness and a brighter crunch
Omit the meringue and chill Bake the custard, scatter nuts after it cools and chill 2 hours The surface does not become light, and egg and coconut are the stars
Bake in a large dish Move to an 18 cm baking dish and bake at 160°C (325°F) for about 30–35 minutes The center takes time to cook through, so check 71°C (160°F) and the condition
Less sweet 60 g sugar in the base and 30 g for the meringue The coconut aroma comes forward, but the sweetness feels weaker when chilled

To put leftover coconut milk toward a meal, nasi uduk, which infuses the aroma into rice, is an easy choice. To lean toward a flourless sweet of eastern Indonesia go to bagea, and to enjoy a thin batter and coconut go to serabi, and even with the same sweet coconut the design of texture changes.

A Dutch Name Born at a Manado Table

A still life of klappertaart with young coconut, walnuts and raisins, in a dish suggesting a tropical table
Looking at a coconut sweet tied to Manado through its layers of ingredients

If you call klappertaart only an "Indonesian-style tart," a little of the dish's history spills out. A paper in an academic journal organizes it as follows: through contact in the period of Dutch rule, a recipe that came to Manado overlapped with Indonesian ingredients, and klappertaart became a sweet tied to Manado. This is not simply a story of one country's dish moving to another; it means the outline of the dish changed depending on who made it, what was available and on what occasions it was eaten.

Local introductions describe it as a sweet custard dessert pairing long strips of young coconut with walnuts and raisins, with the aroma of rum. There are also records of it studied as a sweet served on special occasions, and explanations that it is served chilled after a meal.

Substitutes in a home kitchen are not a compromise to dilute the culture. They are a task of thinking separately about the tenderness of young coconut, the fat and aroma of coconut milk, and egg and starch holding up the liquid. Even if fresh flesh is replaced by frozen, if you keep the thinness of the flesh and the draining, the feeling of custard and fibers parting at the tip of the spoon remains.

Frequently Asked Questions

What if I cannot find young coconut flesh?

Use 200 g unsweetened frozen young coconut, thaw it in the refrigerator and press off surface moisture. Sweetened coconut or coconut in syrup increases sugar and moisture at once, so it is not used in this formula. If you really have no flesh, there is the alternative of adding 80 g unsweetened coconut flakes and 20 ml milk, but the soft bite of young flesh cannot be reproduced.

Is pandan leaf essential?

It is not essential. When using pandan, tie 15 cm and put it in the custard, and take it out when you turn off the heat. If you cannot get it, building the aroma with 5 ml vanilla and 1/2 cinnamon stick does not hide the star coconut.

How do I fix it if the custard is watery?

Return it to the pot, add 5 g cornstarch dissolved in 15 ml cold milk, and stir 2–3 minutes over low heat. Putting flour straight into hot custard makes lumps, so always disperse it in a cold liquid first. Next time, drain the flesh and heat until the spatula's trail stays for 2 seconds before moving to the dishes.

How many days can baked klappertaart be stored?

Let it release heat, cover, and finish it in 2–3 days in the refrigerator as a guide. Do not leave an egg dish at room temperature more than 2 hours, and in an environment above 32°C (90°F) refrigerate within 1 hour. Take out only what you will eat, and discard it regardless of days if there is an off smell, surface moisture or mold.

What if there is an egg or nut allergy?

Egg is used in both the custard and the meringue, and walnuts carry the nut texture. Removing the egg means redesigning it as a cornstarch-only sweet, and when you remove the nuts, making it without increasing the fillings is easier to read for moisture than adding the same amount of coconut. Check the labeling of products containing dairy, egg, walnuts and coconut, and if someone in the family has a severe allergy, do not use shared utensils.

Storage and cooking

FoodSafety.gov gives a guide to cook egg-containing dishes to a center temperature of 71°C (160°F) and to refrigerate within 2 hours of cooking. When it is hard to judge by appearance, put the center temperature and the time first.

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