You wipe em, and make sure to wash em later. Biodegradable single use will still be more wasteful and probably cost more.

I know this isn’t the point, but I do like to carry a set of portable cutlery around and often use it eating out. It’s usually a smallish case with metal straw(s), chopsticks, a knife, spoon, fork. Which one time lead to me forgetting my metal straw at the restaurant of course…