This is the 800ml server from Hario. I make 600g water / 30-35g coffee in it every morning.

I drink my coffee slowly, and really like it hot. When I made a single 300g cup of coffee, I'd time my consumption wrong and it would be lukewarm before I finished. I didnt necessarily mind this, but now that I've been using this server I get hot coffee on demand, very conveniently.

I downsized my regular mug for a teacup, so I always get just enough hot coffee to sip and enjoy before it loses too much temp. So now I drink a lot of small teacups worth instead of a regular mug. I recommend you try this style of serving coffee and see if its for you.

Bonus: this has been so helpful when making for multiple people, since I dont always know when others wake up or come downstairs. Since its a huge insulated server I never worry about not being able to serve my roommates hot coffee.