Are you in Europe? We (in Canada) used a foodsafe "hardwax oil" finish product. It's amazing and I would highly recommend it. It's from a line called Rubio, and there is another company called Osmo that has a similar product. I think there is also a Belgian company. These are all European companies and the products aren't widely known in North America.
We used the product (Rubio Monocoat) on our hardwood floors, but it is foodsafe and we loved t so much that we decided to use it on our countertops too. If you search for these, mostly hardwood floor finishes will come up, but that's ok. The hardwax oils are an easy to use emulsion with no VOCs. They penetrate woods like traditional oil finishes, but the wax maintains a stronger water and dirt barrier, and they don't have to be re-oiled nearly as often. We've had ours a year and are just thinking about maybe touching up some really high traffic spots. I hate shiny, plastic "marine" type finishes like waterlox. When the finish scratches off (which it always does), the wood gets dirty, the counters look terrible, and then you have to do a major sand and smelly, toxic refinish. With these products (as with oils), you can spot sand and retouch stains or scratches anytime.