MITSUIMO TIME: A Sweet Potato Paradise in Koshi City You Have to Try
2020.09.12

A SaruKuma writer visits MITSUIMO TIME, a sweet potato specialty shop in Ikutomi, Koshi City, Kumamoto. Prices start from just 380 yen. We also cover family-friendly tips, access, and opening hours.
Hello, fellow travelers!
It’s Binako, writer for SaruKuma ^^
Today I’m excited to introduce you to a truly unique spot in Ikutomi, Koshi City, Kumamoto Prefecture:
“MITSUIMO TIME” — a shop that’s all about sweet potatoes!

A shop dedicated entirely to sweet potatoes… how rare is that?!
I spotted their flag from the road and pulled in without hesitation!

Inside, the shop is bursting with sweet potatoes of every kind!
I don’t think I’ve ever seen this many sweet potatoes in one place in a single day…
The variety is incredible, and they even offer a tasting comparison pack so you can try several types at once ♪

The Ultimate Sweet Potato Tempura…!?
What an irresistibly tempting name!
Only 3 packs left when I arrived — they must be a hit!
And each pack is loaded with multiple pieces of sweet potato tempura. So generous!
All for just 380 yen!
What a steal!

They also have plenty of sweet potato chips!

Plain, Salted, Cheese, Soy Sauce Butter,
Garlic, Curry, Nori Salt, and Consommé…
So many flavors to choose from!
Good luck deciding!
Each flavor is just 350 yen ★

They even have roasted sweet potato soft serve!
Real yaki-imo (Japanese roasted sweet potato) is blended right into the soft serve… I had to know what it tastes like!
So curious…
Recommended Menu

So this time, I went straight for the Roasted Sweet Potato Soft Serve!
Wh… whoa, it’s HUGE!!
It comes with sweet potato chips standing tall on top, and trust me — photos really don’t do it justice!
Those chips are towering so high they look ready to take flight!

Take a chip, scoop up some soft serve, and…
Mmm!? This is amazing! SO GOOD!!
The soft serve is wonderfully rich thanks to the real roasted sweet potato blended into it.
The chips are crunchy with just the right hint of salt — I literally couldn’t stop eating!
I’ve never had it served this way before, but I’m hooked!
It’s a revelation!
And here’s the best part — there’s a layer of melty roasted sweet potato hidden under the soft serve too!
(I got so caught up eating that I completely forgot to snap a photo of it. Rookie mistake!)
That hidden roasted sweet potato is silky smooth, sweet, and absolutely delicious!
Moments like this make me grateful to be a sweet potato lover!
Next time, I’m definitely buying the roasted sweet potato tasting pack ( *´艸`)
So glad I followed that flag in the road…
I also bought the sweet potato chips, but my kids polished them off before I could photograph them!
The flavor was Plain — a pure, natural sweet potato taste.
No wonder my little ones devoured the whole bag!

Bonus — they accept credit cards and mobile pay, which is super convenient for international visitors ♪
MITSUIMO TIME — Shop Information
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Address
Ikutomi, Koshi City, Kumamoto Prefecture
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Hours
10:00 – 18:30
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Closed
Irregular holidays
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TEL
096-248-3558
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Website
N/A
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Payment
Cash, credit card & mobile pay accepted
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Parking
Available
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No
Tatami seating
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No
Private rooms
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No
Kids’ tableware
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No
Kids’ chairs
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No
Diaper changing table
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Yes
Stroller-friendly entry
Frequently Asked Questions
What’s a recommended family-friendly spot in Ikutomi, Koshi City?
MITSUIMO TIME is easy to visit with kids and is a popular spot in Ikutomi, Koshi City. See this article for more details.
What are the hours and closed days for MITSUIMO TIME?
Hours and closed days may change. We recommend confirming via the official website or phone before your visit.
※ Information is current as of the time of reporting. Prices and hours may change. Please confirm before your visit.
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Article Writer
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Sarukuma Editorial
Sarukuma Editorial is a small team of locals based in Kumamoto, Japan, sharing the hidden gems, hometown flavors, and seasonal experiences that make our region special. We write the kind of guide we wish we had when showing friends around — honest, practical, and made by people who actually live here.
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