Here is a spooky looking mug for you, coloured in white and black glaze that - once layered - gave it some cool green effects.
I've achieved a melted finish by adding clear glossy glaze on top, making this safe for food and drinks.
At the bottom, the glaze created small superficial cracks, but the mug itself has no issues and of course no water leaks.
Measurements: 14cm x 6.5cm
Material: stoneware (bisque + glaze)