MAMEspresso & Planter
This cup is high fired slip cast porcelain and built to last. The glazes are food safe and dishwasher safe. The planter could serve as a nice accent pot, a Mame bonsai or maybe a nice succulent. In any case, drilling holes in your espresso cup will not be necessary.
The actual color and crystals formation my vary from cup to cup. The pictures here represent the range and difference.