Porcelain Wall Cladding for Outdoor Kichen

[Boris]

We made a quick/cheap outdoor kichen during lockdown, simply using concrete board ( leftover from bathrooms), paving slabs and exterior paint.  I would now like something better.  I have seen porcelain wall cladding and want this on the retaining'walls.  I would also like the doors of the kitchen to be made of the same wall cladding as it comes in several toning shades.  What would you suggest to make the doors from, prior to the wall cladding being put on.  TIA.

Edited 2 hours ago by Boris