Went to Seiyu for Katsudon Ingredients — 5ch: ‘These Guys in the Deli Section Made the Whole Trip Pointless’

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The story

A thread appeared on 5ch’s “Hello! Project” board after a user who went to Seiyu (a Japanese supermarket chain) to buy ingredients for katsudon (pork cutlet rice bowl) spotted dirt-cheap tonkatsu in the deli section and posted that it made the whole shopping trip pointless. Replies ranged from “you get what you pay for” takes on the taste to tips like adding extra bonito dashi broth to make it tastier, while the discussion also broadened to cover how Seiyu’s private-label quality changed after its business integration with Trial, and the risk of oil oxidation when freezing fried food. Opinions were split on where to draw the line between cooking from scratch and relying on deli food.

What people said

1AnonymousOct 27, 2026 10:32
@
Went to Seiyu to buy ingredients for katsudon, but these guys in the deli section (nicknamed "welfare," slang for cheap bargain-bin food) made the whole trip pointless.
2AnonymousOct 27, 2026 10:34
This isn't even "you get what you pay for" — it's straight-up nasty.
5AnonymousOct 27, 2026 10:49
Seiyu's cheap for instant noodles too
and their private-label curry is cheap and tasty
Sucks there isn't one near me
6AnonymousOct 27, 2026 10:49
At that price, a little blandness is totally forgivable.
7AnonymousOct 27, 2026 10:52
Pour some extra bonito dashi broth on it and it's great
With a little effort you can make it tasty on the cheap
9AnonymousOct 27, 2026 10:52
It used to be 298 yen for twice the size… Trial.
10AnonymousOct 27, 2026 10:53
Deep-frying is a high bar, especially cutlets.
17AnonymousOct 27, 2026 11:03
Didn't realize people actually make katsudon from scratch
I'll fry my own tonkatsu, but I wouldn't bother turning it into a full katsudon
18AnonymousOct 27, 2026 11:04
Seiyu's still around?
The one near me turned into a Trial
19AnonymousOct 27, 2026 11:05
Fry up like 10 at once and freeze them — makes it quick and easy later.
26AnonymousOct 27, 2026 11:09
Re: #19
You can't fry it first, lol
31AnonymousOct 27, 2026 11:12
Re: #19
Even frozen, the oil keeps oxidizing, so it's not great for your health
20AnonymousOct 27, 2026 11:06
Sometimes I turn store-bought tonkatsu into katsudon.
22AnonymousOct 27, 2026 11:07
Buying half-price tonkatsu at the supermarket and turning it into katsudon the next day is totally normal.
24AnonymousOct 27, 2026 11:08
If you're making katsudon with ham cutlet, you'd be better off just buying katsudon.
28AnonymousOct 27, 2026 11:10
Ham's already flagged as carcinogenic as it is — why would you fry it and double the toxicity?
29AnonymousOct 27, 2026 11:11
At first I was amazed by the value and kept buying it
but it's really just meat and rice that taste like what you paid
30AnonymousOct 27, 2026 11:11
Re: #26
Frying then freezing is fine
You're going to simmer it anyway, so the breading goes soggy regardless
32AnonymousOct 27, 2026 11:12
Food clearly falls into categories:
・things you should cook yourself
・things you should eat out for
・things you should snag as half-price deli food or bento

It's pretty clear-cut
33AnonymousOct 27, 2026 11:14
Re: #31
Never thought of it that way
I'll look into it more and keep that in mind
36AnonymousOct 27, 2026 11:18
Re: #33
You shouldn't reheat cold deli fried food either
34AnonymousOct 27, 2026 11:15
As a rule, it's better not to freeze it at all.
35AnonymousOct 27, 2026 11:17
Never heard that nickname before, and the joke's not even funny.
37AnonymousOct 27, 2026 11:18
You should eat your vegetables
Growing them in the yard is cheap
You can grow as much as you want from seeds
38AnonymousOct 27, 2026 11:23
Before long you won't be able to buy domestic vegetables at the supermarket
so it's better to start a home garden sooner rather than later
39AnonymousOct 27, 2026 11:24
Isn't it Trial now, not Seiyu?
40AnonymousOct 27, 2026 11:28
My local supermarket sells something called 'katsuni' separate from tonkatsu — basically katsudon without the rice.
41AnonymousOct 27, 2026 11:36
Now I'm craving katsudon
Frying's a hassle, so maybe I'll just buy the tonkatsu from the supermarket
50AnonymousOct 27, 2026 11:52
Thing is, the frozen stuff is basically all made in China.
60AnonymousOct 27, 2026 12:35
Re: #50
Even the non-frozen stuff, pretty much all supermarket prepared deli food is like that
55AnonymousOct 27, 2026 12:03
There's a Trial near me, and it's started stocking Seiyu's "seal of approval" product line.
56AnonymousOct 27, 2026 12:19
Re: #55
So Trial's quality went up a bit too, huh
I walked by it yesterday — wish I'd stopped in

Background and Key Points of This Discussion

As part of its business integration with Trial Holdings, Seiyu has been converting the signage of some stores to Trial and swapping out its private-label products. The comments in the thread mentioning that a store “changed to Trial” or referencing “Trial’s private-label products that got absorbed” point to the effects of this integration. Opinions in the thread were divided over oil oxidation when freezing fried food and whether reheating deli food is advisable, but the actual effects vary depending on storage conditions and reheating methods, so it’s not accurate to simply say it’s “bad for your health.” Where each household draws the line between price, effort, and nutrition is largely a matter of personal judgment.

*This article is excerpted and summarized from the 5ch (“Hello! Project”) thread “X user: “Went to Seiyu to buy katsudon ingredients but the deli section ruined the whole point”.”

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