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  • Japanese convenience store challenge is only for those with extreme tastes Oona McGee
    Super Happy! Challenge gives us two unforgettable products that deserve a place in convenience store history. If you’re hungry and in the mood to try convenience store food, Lawson is the place to go right now as the chain is currently upsizing some of its most popular products for free. ▼ Popular items in the “Super Happy! Challenge” lineup include oversized versions of onigiri, sandwiches, and the Premium Roll Cake. In amongst the offerings are two surprises we weren’t expecting, and rather
     

Japanese convenience store challenge is only for those with extreme tastes

5 June 2026 at 03:00

Super Happy! Challenge gives us two unforgettable products that deserve a place in convenience store history.

If you’re hungry and in the mood to try convenience store food, Lawson is the place to go right now as the chain is currently upsizing some of its most popular products for free.

▼ Popular items in the “Super Happy! Challenge” lineup include oversized versions of onigiri, sandwiches, and the Premium Roll Cake.

In amongst the offerings are two surprises we weren’t expecting, and rather than being happy to see them, we had a hunch they might be too extreme for anyone’s liking.

▼ The “Too Sour” Salted Lemonade (228 yen [US$1.43]) and the “Too Sweet” Drinkable Chilled Zenzai (298 yen).

According to Lawson’s official website, the Too Sour version of the chain’s Salted Lemonade contains twice as much lemon juice as the previous version, while the Too Sweet version of the Drinkable Chilled Zenzai is made with twice as much red bean paste as the original product.

▼ Zenzai is is a traditional Japanese sweet made from sweetened red beans and usually served with mochi (rice cakes).

Reading the descriptions alone, it’s hard to tell just how extreme these drinks really are, so our reporter P.K. Sanjun bought both the regular and upsized versions of each for a taste test back in the office.

▼ Starting with the regular Salted Lemonade, it wasn’t especially sour – in fact, it tasted more like a lightly salted lemonade than anything intensely citrusy.

Then he took a sip of the Too Sour Salted Lemonade

▼ Waaaaa!

P.K. could hardly get his words out, but when he finally unpuckered his lips he managed to say, “Wow. This stuff is unbelievable.

It wasn’t just that it was more sour – the entire flavor profile felt completely different. To try and describe it, P.K. says it’s like tasting the difference between water and tea and then tasting the difference between water and cola, which is where the Too Sour Lemonade sits. The taste, texture and intensity is on a whole other scale compared to the regular version.

It was so intense he couldn’t even finish the drink, so he moved on to the regular Drinkable Chilled Zenzai.

It had a pleasantly balanced sweetness that was fairly refined and P.K. had absolutely no complaints about the flavour. Then he took a sip of the Too Sweet Drinkable Chilled Zenzai

▼ Tooooooo sweeeeeet!!!!!!!!

The sweetness was absolutely relentless. It was the kind of sweetness that burns its way down your throat in an aggressive manner and it was so strong that P.K. dare not take another sip.

After trying the drinks, P.K. was surprised to find that in both cases, he actually preferred the original versions. They felt more balanced and, frankly, more enjoyable to drink.

P.K. gives both of these two thumbs down.

Although the drinks themselves were too extreme for P.K.’s palate, he was impressed by Lawson’s marketing. In choosing to go overboard with the sourness and sweetness levels, this campaign serves to highlight just how good the original versions are. It also proves that you really can have too much of a good thing, and so sometimes, just sometimes, upsizing your favourite products or flavours may not be all it’s cracked up to be.

Everyone’s palate is different, though, so if you’d like to test yours against the extreme ends of the spectrum, the drinks will be on shelves for a limited four-week period from 2 June.

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  • 7-Eleven Japan adds a new watermelon smoothie to its convenience stores…but is it worth the hype? Oona McGee
    Summertime bust or must-buy? It’s been roughly three years since 7-Eleven added smoothie machines to its stores in Japan, allowing customers to whip up freshly made smoothies in seconds after selecting their desired varieties from the freezer section. During that time, the chain has added a number of limited-edition flavours to the range, with all of them proving to be popular with customers. Now with summer fast approaching, the chain is giving us a brand new variety that’s said to capture th
     

7-Eleven Japan adds a new watermelon smoothie to its convenience stores…but is it worth the hype?

3 June 2026 at 13:00

Summertime bust or must-buy?

It’s been roughly three years since 7-Eleven added smoothie machines to its stores in Japan, allowing customers to whip up freshly made smoothies in seconds after selecting their desired varieties from the freezer section. During that time, the chain has added a number of limited-edition flavours to the range, with all of them proving to be popular with customers. Now with summer fast approaching, the chain is giving us a brand new variety that’s said to capture the taste of Japanese summer in a cup.

▼ The すいかスムージー (Suika Smoothie) or “Watermelon Smoothie

Released on 2 June, the first thing we noticed when we saw the new release at our nearest branch was the lid, which was decorated with images of not just watermelon, but strawberries as well. This indicated that the drink combined strawberry pulp with watermelon pulp, and that’s not all – the cube-shaped chunks inside the cup are infused with watermelon juice and apple purée, and the ingredients list reveals that a small amount of tomato purée and salt are also included as special secret ingredients.

A lot of watermelon drinks in Japan tend to contain a mix of fruit juices but we tend to prefer 100 percent watermelon juice as it allows the natural flavor of the fruit to shine through. With that in mind, we were curious to see how this smoothie would fare, and how authentic the watermelon flavour might be.

Upon first sip, we immediately noticed that the slightly crunchy texture of the ice was surprisingly similar to the texture of real watermelon. This was an impressive highlight we weren’t expecting, and thankfully the strawberry flavour, which we thought might be too strong, was a pleasant accent, with its characteristic tartness playing a soft accompaniment to the watermelon, which took the spotlight.

The taste of watermelon was truly authentic, with the smoothie capturing the fruit’s juiciness and sweetness perfectly while delivering a refreshing, icy coolness. Although it wasn’t as pure as a 100-percent watermelon juice, the balance between ingredients was so carefully crafted that it didn’t take anything away from the star flavour, and the watermelon remained delectably intense from start to finish, leaving us completely satisfied.

For 400 yen (US$2.50), this smoothie will definitely quench your thirst, particularly on hot and humid days, and after trying it we now understand the hype it’s been getting online. It’s a drink that’s well worth trying, and here’s a secret tip for you: the smoothies at 7-Eleven will be half price on “Smoothie Day” on 10 June, so put the date in your calendars and you’ll be able to enjoy the whole range, including the delicious matcha variety, at a great discount.

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