Answer (1 of 3): You can’t. Epoxies that will hold ceramics together will melt if the contents heat the container hot enough. Heat proof epoxies are not safe for food use. The only safe way is to run a bead of molten glass between hot ceramic pieces (hot enough that the glass won’t cool too much
What is the best glue for pottery? - Quora
How much longer can I use ceramic dishes that have their glaze starting to wear down? - Quora
Is there a way to repair broken pottery that restores it without using glue? - Quora
Can ceramic cups go bad if left unused for some time? - Quora
Which glue is best for repairing broken pottery? - Quora
What is an earthenware mug? - Quora
Is there a way to repair broken pottery that restores it without using glue? - Quora
What food safe glue can I use to repair my chipped tagine? - Quora
What is the best apoxy or glue for fixing ceramic planter pots? - Quora
Is there any way to glue ceramic pieces together without them breaking again when they dry out? - Quora
Why should I not use a chipped ceramic bowl or mug? - Quora
DIY Faux Kintsugi : 10 Steps (with Pictures) - Instructables