Honest Review - GS25 "The Bigger" Tuna Mayo Triangle Gimbap – More Rice, But Where's the Tuna?

Welcome back to C-Store Eats! If you’ve ever stepped inside a Korean convenience store (like GS25 or CU), you’ve definitely seen rows of Samgak Gimbap (삼각김밥)—those iconic, budget-friendly triangular rice balls wrapped in crispy seaweed.

Today, we are looking at GS25’s “The Bigger” Tuna Mayo Triangle Gimbap. Tuna Mayo is universally loved and is hands-down the most popular flavor in Korea. Priced at 1,700 KRW (roughly $1.25 USD), this “jumbo-sized” version promises to fill you up on a budget. But does a bigger size mean a better bite? Here is my 100% honest review!

✨ First Impressions: Heavy and Familiar

The packaging design looks almost identical to the standard, original Tuna Mayo gimbap we all know and love, giving it a very comforting, familiar vibe. However, the moment you pick it up, you can instantly feel the difference. It feels noticeably heavier, thicker, and more substantial in your hand compared to the regular ones.

🍙 More Rice… But Where is the Filling?

Before taking my first bite, my expectations for this big-sized Tuna Mayo were through the roof. Sadly, as I took one bite, then another, a wave of disappointment hit me.

The most crucial part of this snack—the creamy, savory tuna mayo filling—was severely lacking compared to the massive mountain of rice. While they definitely upgraded the overall size of the rice ball, the core filling and sauce failed to keep up with the ratio. It felt like eating a lot of plain white rice.

🍜 The Ultimate Savior: Instant Ramen Broth is Mandatory

Because the filling was so sparse, the overall flavor balance completely collapsed.

The savory tuna and creamy, sweet-and-salty mayo magic was barely noticeable because there wasn’t enough sauce to coat the rice grains. Eating it on its own felt a bit dry and bland.

Thank goodness I paired this with a hot cup of spicy instant K-ramen! Dipping this gimbap or taking a sip of that fiery, savory ramen broth was the only thing that saved it. If I had eaten this alone without a drink or soup, finishing it would have been a real struggle.

If GS25 is going to add more rice, they seriously need to be more generous with the stuffing next time!

💡 Final Verdict: Bolder Size, Lacking Soul

At the end of the day, it’s a giant triangle gimbap that focuses purely on size rather than inner substance. It is practically impossible to fully enjoy without the CPR-like revival of hot instant ramen broth.

I recommend this if:

• You are on a tight budget and just need pure carbs to fill you up.
• You already plan on buying a spicy cup of Korean ramen and want some plain rice to dip into the soup!