Sealing it will prevent another olive oil stain from occurring as well.
Can you seal marble with olive oil.
Olive oil corn oil and sunflower oil should never be used to maintain a cutting board or butcher block.
I have been told that rubbing olive oil into the marble i am talking marble not granite then the marks or scratches will fade but i am not daunted by that because this is not a man made stone but all natural.
Less fat is better than more in canning.
Again since the sealer does not form a film to seal off the surface etching can still occur upon contact with corrosive substances on calcite based stones like marble and travertine.
Not all marble needs to be sealed.
Don t use vegetable oils or olive oil to seal your cutting board.
For example a leaky bottle of olive oil left on the countertop.
If water if regularly darkening your granite then you need to seal the whole counter with 100 silicone sealer.
You could put olive oil on it but likely won t be satisfied with the results.
These oils go rancid relatively quickly and can leave the board with an unpleasant smell.
As touched on above these oils experience rancidification a process that yields a rank smell and unpleasant taste.
Before sealing a marble countertop test it with mineral oil or water to make sure it really does need to be sealed.
However some of the major companies that produce granite cleaners and sealants say that using mineral oil on sealed or unsealed granite can cause discoloration over time.
By the way even cake mix and flour can become rancid.
Unfortunately sealing marble won t help to prevent etchings.
As a cutting board touches your food substances that can turn rancid should be avoided.
Stone sealers will not prevent chemical damage.
They can be used on all types of natural stones although they are most effective on unpolished stone such as slate tumbled marble and travertine surfaces.
Eventually the oil will absorb and darken stain unevenly probably the marble.
You can always add fresh oil when you get ready to eat your canned product.
Since you ve already applied a marble sealer the oil will sit on the surface makeing it slick and attracting dirt and grime.
This is the same idea as dusting with a dusting spray or if you like to keep it hippy an olive oil based spray.
So the more stable fat you use and the cooler and darker the environment the better for shelf stability.