Made byMyojoTokyo, Japan

Myojo Ippei-chan Yakisoba Soy Butter Mentaiko 127g

A tray of Japanese stir-fried noodles you make with a kettle, from the Ippei-chan line known in Japan as "the yakisoba with the mayonnaise".

Regular price $5.99AUDSold out

$4.72 per 100 g

This one is out of stock. See more Japanese Yakisoba.

Why we say this

The Ippei-chan Yomise no Yakisoba line placed third in two national polls in Japan, one of 1,317 people in December 2025 and a larger one of 1,377 in July 2026 on which has the best noodles. That standing belongs to the whole line; this soy-butter mentaiko tray is one of its flavours.

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Product information

About

A tray of Japanese stir-fried noodles you make with a kettle, from the Ippei-chan line known in Japan as "the yakisoba with the mayonnaise". The sauce is soy and butter rather than the tangy brown sauce most cup yakisoba use, and you top it with a squeeze of spicy mentaiko-flavoured mayo and a sprinkle of cod roe. This is the everyday supermarket tray (Myojo's Ippei-chan line runs larger sizes above it, in other flavours), and it is far milder than "spicy cod roe" makes it sound.

明星 一平ちゃん夜店の焼そば 醤油バター明太子味. Myojo Ippei-chan Yomise no Yakisoba, Shoyu Butter Mentaiko.

What you're getting

  • Savoury and rich rather than sweet and tangy: a pork-and-seafood soy sauce carrying a butter aroma. It is a butter flavouring rather than butter, which is why you won't find butter in the ingredient list either.
  • Thin, wavy noodles with onion worked into the dough. A crisp, clean bite rather than a chewy one, and the sauce clings to them.
  • The mentaiko doesn't come from the sauce. It comes from a topping of cod-roe granules, nori and chilli, and from the mayo, and the topping carries most of it.
  • Set your expectations on the soy-butter rather than the roe. The mentaiko is fainter than the name suggests: you taste it as a lift on top rather than the main event.
  • Lift the lid and you get a big hit of butter and soy. It smells stronger than it tastes.
  • Allergens: contains wheat, egg, milk, soy, fish and squid, plus pork, which Japan declares and Australia does not. Japanese labels don't have to flag fish as an allergen, so the pack names it only in its ingredient list (pollock roe, fish sauce). If you avoid it, look for it by name in the ingredients.
  • Also on the label: made on equipment that also handles prawn, crab and walnut. Egg, milk, squid, salmon and mackerel are declared by Myojo but sit inside compound ingredients, so they are not named in its ingredient list.

The chilli in the topping and the spicy mentaiko-flavoured mayo give it a light kick, no more. And this is not the original Ippei-chan with mustard mayonnaise, the brown-sauce flavour: this one's mayo is mentaiko-flavoured. Myojo makes more than one mentaiko Ippei-chan, so check the size. This is the 127 g soy-butter one. And if you search the name in English you will land on a completely different American product, a chilled two-serve pack you cook in a frying pan: this is not that. One tray, one serve, a kettle and a sink.

Mentaiko itself is pollock roe cured in chilli. Our guide Mentaiko: the pink, speckled roe on your pasta, rice and sushi explains the roe and where to find it in Australia.

Ingredients

Fried noodles (wheat flour (produced in Japan), vegetable oils and fats, salt, onion powder), sauce (semi-solid dressing, soy sauce, sugars, pork fat, salt, pork extract, fish sauce, seafood extract, hydrolysed protein, flavour seasoning, spices (pepper, garlic)), dried vegetable (cabbage), topping sachet (processed pollock roe, nori seaweed, spices)

flavour enhancers (amino acids etc.), calcium carbonate, kansui (alkaline noodle salts), caramel colour, alcohol, thickeners (polysaccharide thickeners, modified starch), flavouring, acidulant, carotenoid colour, antioxidant (vitamin E), red yeast rice colour, spice extract, magnesium carbonate, vitamin B2, vitamin B1.

For your safety, please check both the information on this page and the printed label on the pack. If anything is unclear or the information differs, please contact us before consuming the product.

Allergens
Contains
  • Wheat
  • Egg
  • Milk
  • Soy
  • Fish
  • Squid
May contain
  • Prawn
  • Crab
  • Walnut

Not ingredients — these are made or handled on the same equipment as this product, so traces are possible. We list every shared-equipment allergen stated on the pack or by the maker.

Dietary notes

Pork is in the sauce twice, as pork lard and as a pork extract; there is no pork meat in the cup.

For your safety, please check both the information on this page and the printed label on the pack. If anything is unclear or the information differs, please contact us before consuming the product.

Nutrition
Nutrition
Per tray (127 g) Per 100 g
Energy 2368 kJ (566 kcal) 1865 kJ (446 kcal)
Protein 11.0 g 8.7 g
Fat 25.2 g 19.8 g
Carbohydrate 73.7 g 58.0 g
Sodium 1732 mg 1364 mg

From the Japanese pack's nutrition panel — not the Australian nutrition information panel. The Japanese pack gives no saturated fat or sugars figure. The per-100 g column, the kJ figures and sodium (from the pack's salt equivalent, 食塩相当量, ÷ 2.54) are our calculation.

Details
Maker
Myojo · Tokyo
Made in
Japan
Net contents
One tray: 127 g, of which 100 g is noodles

Our guide

How to eat it

  • Pour boiling water to the line inside the tray.
  • Put the lid down and wait 3 minutes.
  • Drain it right out through the spout: a half-hearted drain is what makes the sauce watery.
  • All three sachets go on after you drain, never before: pour the sauce over first and stir it well through.
  • Squeeze the mayo over the top, then scatter the cod-roe topping on.

Good to know

  • Eat it straight away: it firms up and dries out if it sits.
  • Some people stir the mayo right through; others leave it in a stripe and get it in bursts. It is a genuine matter of taste, so try it one way and then the other.
  • Use a kettle, not the microwave: the tray is not made for it.
  • Keep it in the cupboard, out of direct sun and away from anything strongly scented: the pack picks up smells.

Real quotes from the review sites named on the cards. We show no star rating from those sites.

The maker

Where it comes from

  • Myojo
  • Tokyo

In 1995 Myojo put a sachet of mustard mayonnaise into a tray of instant yakisoba, an odd idea at the time and the first of its kind, and thirty years on a mayonnaise sachet is still the thing Ippei-chan is known for. The name means night-stall yakisoba: the kind sold from a night-market or festival stall, which is the taste Myojo set out to bottle.

Product facts here are checked against the maker's own page: myojofoods.co.jp (opens in a new tab)