Popin' Cookin' Sushi Kit: English Instructions, Step by Step
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The Sushi Kit โ Tanoshii Osushi-ya-san on the Japanese box โ is the Popin' Cookin' set people most want to make and most often get wrong. Kracie rates it 4 out of 5 for difficulty, and unlike the kits that need a microwave, everything here is done with water and your hands. That is what makes it hard: nothing is automatic, and the candy sets while you are still shaping it. This is the full English walkthrough, written by a shop in Tokyo that has made every kit in the range.
Watch It Made
This is our own kit, made in our shop in Tokyo, filmed start to finish in a little over a minute. Written steps get you most of the way โ but seeing the motion is what makes the illustrations on the box click, especially for the ikura. Read to understand it; watch to get the confidence to actually finish it.
Making the Popin' Cookin' Sushi Kit โ 1 minute 5 seconds, no commentary.
What You're Making
The box front shows a full sushi counter, which is why people expect ten kinds of sushi. You are actually making four things, and each one uses a different technique. That is the real appeal of this kit โ it is four small lessons rather than one repeated step.
Tamago
The candy egg. Apple flavour, and the most forgiving piece in the box โ a good one to practise the shaping on before you move to the others.
Maguro
The tuna. Grape flavour. Needs a flatter, wider shape than the tamago, laid over the rice rather than wrapped around it.
Ikura
Salmon roe, mandarin soda flavour, made by dropping liquid into liquid so it forms beads. Genuine spherification in a candy box, and the step everything else waits on.
Chirashi
The scattered bowl that uses up whatever you have left. Deliberately the last thing you make, and the most forgiving to look at.
Before You Open Anything
Three things decide whether this kit works, and all three happen before you mix a single powder.
Set up first
- You need no microwave. This is a water-only kit. If a guide tells you to heat something, it is describing a different set โ the microwave kits are a separate group.
- Water temperature matters more than quantity. Room temperature. Cold water leaves the candy rice crumbly and refusing to hold a shape; warm water sets it before you have finished pressing it.
- Unpack everything onto the tray before you start. Once the rice is mixed you have a short working window, and hunting for a sachet is exactly how that window gets wasted.
The Order Is the Whole Trick
The instruction sheet shows the components in the order they appear on the tray. That is not the order you should make them in, and following the sheet top to bottom is the single most common reason this kit ends badly.
The ikura goes first and the rice goes last. The roe beads need time sitting in liquid to firm up, and they are perfectly happy waiting for you. The candy rice is the opposite โ it starts setting from the moment the water goes in, and it will not wait for anything. Every minute you spend on ikura with the rice already mixed is a minute of shaping time you have thrown away.
So: ikura, then the toppings, then the rice, then assemble immediately. If you take one thing from this guide, take that.
How to Make It
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Unpack completely and identify the wells
The tray has moulded compartments of different sizes, and each one is meant for a specific component. Match them to the diagram on the box now, while nothing is mixed and nothing is setting. The small deep well is for the ikura liquid; the shallow shaped ones are the nigiri moulds.
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Make the ikura first
Mix the ikura powder with water in one well, then fill the second well with plain water. Draw the coloured liquid into the dropper and release it into the water one drop at a time. Each drop skins over as it falls and becomes a bead.
Hold the dropper vertical and close to the surface, and squeeze slowly. Drops released from height flatten into discs instead of spheres, and a fast squeeze produces one long string rather than separate beads. Leave them sitting in the water while you do everything else โ this is the component that improves with waiting.
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Mix the tamago and maguro
Each topping powder goes in its own well with its own measure of water. Stir until there are no dry pockets left at the bottom โ undissolved powder is what makes a finished piece grainy rather than glossy. These will firm up as they sit, which is fine.
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Mix the rice, and move
This is the timed step. Add the water to the white powder, stir quickly and completely, and start shaping straight away. Work it into small ovals with your fingers โ pressing rather than rolling gives you the flat base a nigiri needs.
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Assemble the nigiri
Lay the tamago and maguro over the rice ovals and press gently until they hold. The candy is sticky enough that it bonds on contact; pressing hard flattens the rice out sideways and gives you something that looks like a slab rather than a piece of sushi.
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Lift the ikura out last
Spoon the beads out of the water and drain them for a moment before they go on. Wet beads slide off. This is also the point where they are most fragile, so lift them, don't chase them around the well.
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Build the chirashi with what's left
Whatever rice, topping and roe you have over goes into the bowl piece as a scattered arrangement. Kracie designs this deliberately as the last step, which is why it is a relief rather than a chore โ nothing here has to be a precise shape.
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Eat it the same day
These pieces are at their best within the hour. Left overnight the rice dries and hardens, and the ikura beads collapse. There is no way to store a finished kit well, so make it when you intend to eat it.
Where It Goes Wrong
Four failures account for nearly everything people write to us about with this kit.
The four common failures
- The rice won't hold a shape. Almost always water โ too much, too cold, or mixed too slowly so it began setting before it was even. We've written the long version of this, because it is the cause of most failed kits across the whole range.
- The ikura came out as one blob. The dropper was squeezed too fast or held too high. Slow, vertical, close to the surface, one drop at a time.
- Everything set before assembly. The rice was mixed too early. Reverse the order โ ikura first, rice last.
- It tastes like fruit, not fish. That's the design. Tamago is apple, maguro is grape, ikura is mandarin soda. The flavours are supposed to surprise you, and if yours tasted flat there's usually a reason for that too.
If your tap water is very hard, that alone can change how the candy sets โ we tested what to pour instead.
Questions People Actually Ask
Do I need a microwave?
No. The Sushi Kit is water only. That is one of the reasons it suits a table of children โ nothing gets hot.
How long does it take?
Plan for around 30 to 40 minutes the first time, less once you know the order. The kit is not long, but it does not reward rushing.
Is it safe to eat?
Yes โ it is confectionery, made by a major Japanese food manufacturer. If you need the ingredient and allergen detail, we've gone through the label in full.
What age is this kit for?
At 4 out of 5 difficulty it is one of the harder sets, and the ikura step needs a steady hand. Younger makers manage it happily with an adult doing the dropper โ here's how the range breaks down by skill.
Should this be my first Popin' Cookin' kit?
Probably not. It is the one most people want, but starting here is how the kit gets a bad reputation. Start somewhere easier, then come back to this โ or see how every kit ranks.
Where do I find instructions for the other kits?
Every one we stock has its own translated walkthrough, collected in our English instructions library.