Don't know the answer, but there are quite a few GWers/Houzzers who have wood counters, perhaps they will chime in.

(In effect, I'm bumping this thread to give it another chance at useful answers!)

Thanks Buehl!!

Is the sink undermount or drop-in? Undermount sinks in wood counters require that you pay attention to the exposed countertop edge around the sink.

You should make sure you immediately wipe up any excess water from the countertop, and monitor whether water beads up on the top. If water stops beading up you should should re-apply oil to the countertop according to the manufacturer's instructions.

Hopefully your woodworker use the two-part oil that Rubio Monocoat recommends for countertops. It is pricier than the furniture oil but you want the higher quality for wooden countertops exposed to water. See below.

https://www.monocoat.us/2C-Oil/

Billy

I second the previous comment that you need to religiously wipe water off and always use coasters and trivets when handling hot/wet things in the kitchen