These chewy candies are part of the Sour Bursts lineup from 1UP Candy, co-founded by YouTuber FaZe Rug.
Each chew has a soft exterior and an explosively sour liquid core, with flavors like Sour’n’Strawberry, Gush’n’Green Apple, and Ooze’n’Orange.
The red pack typically features the strawberry flavor, and yes — it turns your tongue electric blue. That’s part of the 1UP vibe.