IIt is a good idea to cure the pots because of the natural porosity of clay.
Every culture that cooks with clay has its own method to cure their cookware.
The following method is the traditional way to cure clay pots in Colombia
Heat the pot slowly until its warm
Cut a ripe plantain or regular banana in half. Like a crayon or lipstick, start rubbing the plantain all over the inside surface of the pot until the inside is covered in residue
Let the pot sit for 15 to 20 mins until the residue is dry.