The pleasing crackle of biting into tanghulu, a Chinese snack that has taken over social media, isn’t without its risks. Doctors worldwide are raising the alarm about the TikTok trend after children have gotten burned attempting to make “glass fruit” in the microwave.

In China, street vendors often make tanghulu with hawthorn berries resembling bright-red crab apples encased in crystallized sugar. On social media, creators have embraced the traditional dessert, making it their own by threading a range of fruits, such as strawberries and grapes (and even fried chicken), onto skewers and dipping them into sugar syrup.