On 24 May, 17:31, Tim Watts wrote:

Wood. I like this, in that it *could* be long lasting and can be
repaired if it gets abuse. I fancy my chances of fitting it myself too.
But some woods seem to be a sod for blackening if any water gets left
(have kids, it is going to happen, often)...

I have beech block from Howdens, fitted myself. Good coat of Danish
oil every 6 months, absolutely no issues with blackening, I think
that's maybe more prevalent with oak.