Has anyone used a more durable surface inside the camper for cooking on? I'm thinking a thin sheet of aluminum over the baltic birch might be a good idea.
I use tempered hardboard (the stuff that is smooth on one side and waffled on the other) for a wear layer on my workbenches. I add a couple of coats of spar varnish to make it liquid proof. Easy to re-varnish if it gets scuffed. Aluminum, depending on alloy and temper, can be hard or soft. Soft stuff dents, scratches and gouges easily.
I have formica on my countertops in my camper.
jim