Yes, it is possible, but one should always take some precautions. Any ceramic piece will become hot if filled with a boiling liquid. First, if your mug doesn't have a handle, we recommend, to avoid filling your cup to the rim. Leave at least an inch so you can grab your cup by the top. Then, let your cup rest for about 5 minutes. Your cup will become hot, but the outside will cool down quickly. When you can touch your mug without burning your fingers, it means your beverage is ready to drink... and won't burn your tongue either!