It seems like you do NOT think you are above this task, but you may have given the impression you are. I would clear that up with boss in a good natured way.
skivvy
This is actually what junior support staff are there for within reason. Nobody expects you to clean the toilet or polish their shoes, but if you're above coffee or a photocopy what are you there taking up money and space for?
Many of us have been there, I did my share of menial stuff starting out, it is well worth dealing with it and working hard at the things you are given, even if they are menial. Which brings me onto:
profitable time
Support staff aren't making the money, they aren't contributing unless they support. They are literally there to do things so that you don't want the profitable employees spending their time on, to contribute by freeing them up.
If I found myself or another member of senior staff spending time making coffee, doing photocopies running a report to finance, or whatever else while someone paid to be an assistant had directly refused to do that task, I have to admit I would think that was silly and be wondering why I had that assistant.
@OP - I would clear up this misunderstanding and offer to make it, get someone to show you. It is way better to have a laugh and a good-natured convo with boss about not knowing how to make tea very well, than it is to get negative feedback from the boss at your next review.