Do you mean that the recipe calls for your brew to be set “in a dark/cold place”—that is, with the words “dark” and “cold” being separated (or joined) by a slash? Is that what you’re asking about?

If so, that’s exactly the reason I so dislike that all-too-common use of slashes: nobody reading it actually knows if it means “and,” “or,” or “and/or.” And sometimes it makes a difference.

In this case, I’d be inclined to interpret it as meaning both; but this question is probably best answered by somebody with liqueur-making experience rather than English-analyzing experience. It doesn’t really matter what the expression is or ought to be so much as what the procedure ought to be.

I think it simply means that the brew doesn’t tolerate light and should be kept cold. The question would have to be in an opaque container and in the cold.

In this case, I would think it would mean both dark and cold. A comma would have been better than a slash.

It was a dark and cold and stormy night. That works. lol

I think it mean dark or cold.

Put the covered pan in the refrigerator and be done with it.