Do I need to varnish natural slate use it as a cheese platter?

Here's why:

* Natural slate is already naturally non-porous: This means it won't absorb moisture or flavors from the cheese.

* Varnish can alter the look and feel: The natural beauty of slate is in its rough texture and cool, earthy tone. Varnish can make it look shiny and less natural.

* Varnish can be difficult to remove: If you decide you don't like the look of the varnish later, it can be tough to remove completely without damaging the slate.

However:

* You can use a food-safe sealant: This will help protect the slate from minor scratches and make it easier to clean.

* Consider a natural oil: A light coat of mineral oil can enhance the slate's natural beauty and make it easier to clean.

Ultimately, the decision is yours! You can enjoy your slate cheese platter with or without a sealant, depending on your preference.