Make it yourself!

She isn't a snob, she's an addict. It doesn't matter how she gets her fix, even if she has to murder some transporter freak, she needs to get the good stuff.

this is classic anti-Janeway rhetoric and I won't stand for it!
- Come say that to my face and I'll personally give you the Janeway treatment. I'm sure I can program the transporter to turn you directly into coffee. :p
murder some transporter freak
Daily reminder that Janeway Did the Right Thing.
She absolutely killed Tuvix. But it was the right call at the time, being stranded 70 years from home.
- On the other hand, making the top notch pilot - you know, the one she sprung from prison because he was so good at piloting - also the assistant in sickbay was a questionable decision. Surely there was someone whose job was vacuuming the carpet in the crew mess hall, or some other less critical job, who could help in sickbay during emergencies, and not your top pilot who could save everyone's lives with his piloting skills.
  Sorry. This always bugs me. I agree with you about Tuvix, but Janeway made some pretty odd decisions that everyone ignores in favor of Tuvix.

If your replicated coffee goes cold while you read reports on your PADD, do you have to breakdown and re-replicated the coffee and mug just to get it hot again? (Assuming Kes isn't nearby to freshen it up for you.)

The Doctor is a projection of the electromagnetic and force fields. Microwaves are projections of electromagnetic fields.
Why couldn't B'Elanna rig up some projector to localize a microwave beam and follow your coffee cup? You could call it the ECH (Everyday Coffee Heater) since it was based off the Doctor.
- this sounds like a great way to get stale coffee.
  Also wouldn't it be easier to just get the doctor to stick his finger in it or something?
  This is probably his reply... but I'd bet he'd do it if kess asked.
- I was going to say that this idea doesn't fit in with the lore at all. But when I think about how a lot of Trek tech has hilariously bad failure modes built in (e.g. transporter malfunctions, rogue holodeck programs, consoles that double as fireworks storage lockers, flame-throwers on the bridge), accidentally cooking crew-members insides for want of perpetually hot coffee is weirdly on brand here.
- Great. Now my coffee won't stfu about its accomplishments.
I vaguely recall a moment where someone reheated some tea or soup by just putting it back in the replicator and asking for it to be hotter.
Edit: Actually... That might have been Spaceballs 🤔
You can always fill the mug with some alpha particle emitter...

She was a caffiend

She does complain it’s not the same as the “real stuff”

The only real choice is raktajino

Coffee addict, sure, but she never seemed particularly picky about it.

Janeway is the best kind of coffee snob.

The kind that would lay waste to an entire quadrant for just one drop.
- There's coffee in that quadrant.

I like her better in prison (orange is the new black)

I wonder if Pike is the type of person to brew coffee using the brewers we have today.

He would keep it classy like that.
- I’d imagine he works long hours to improve on a pour over or find the best tool for distributing grounds in a portafilter.

Hey, I occasionally drink speciality instant.