Need some advice on wood & design ideas for outdoor kitchen counter.

The wife and I cook outdoors at least a couple times a week. We have always talked about how nice it would be to have a little sink outdoors to clean pans quick and also use for outdoor gardening. Well the porject gods blessed me with a nice little sink from the habitat store. My plan is to make a simple open structure around the sink with some wings on either side. Maybe a shelf under te sink for items but mainly leaving it wide open.

What would you guys think would bea good wood for this item
It would likely be exposed to water from being outdoors although the plan is to keep it on the porch.

I know teak would be great but the expense is a little much. Could I use something like oak and just put a good seal coat on it or what?

Also how would you guys recomend I mount the sink. Naturally I don’t think plywood would work very well or look good either. I had thought of something like laminate countertops but the substrate is junk and even gluing it to wood wouldn’t work well.

Any design Ideas or considerations I should take into consideration would be greatly appreciated. Thanks.