Should natural slate be treated before serving food on it?

It is generally not recommended to serve food directly on natural slate without treating it first. Here's why:

* Porosity: Slate, while a natural stone, can be porous. This means it can absorb liquids, potentially leading to bacteria growth and food contamination.

* Uneven surface: The surface of slate can be uneven, creating crevices where food particles and bacteria can get trapped, making it difficult to clean thoroughly.

* Potential for chipping: Slate is relatively brittle and can chip, especially if it's exposed to extreme temperature changes (like going from a hot oven to a cold countertop).

Instead of serving food directly on raw slate, consider these options:

* Sealing: You can apply a food-safe sealant to the slate surface. This will create a barrier that prevents liquids from being absorbed and makes it easier to clean.

* Using a liner: Place a food-safe liner, such as parchment paper, wax paper, or a silicone mat, on top of the slate to create a barrier between the food and the stone.

* Using a separate serving plate: Serve food on a plate or platter that's specifically designed for serving food, and use the slate as a decorative base or serving board.

Important note: Before using any slate for serving food, it's essential to make sure it's food-safe. Look for slate that is specifically marketed for food use. If you are unsure, contact the manufacturer or a reputable source for guidance.