Do You Like Coffee or Tea?

If you're asking which one someone would rather you could also say "Do You Prefer Coffee or Tea?"

I didn't like coffee at all a few years ago actually, but since I drank espresso that my brother had made, themy whole concept of mine for coffee has comprehensivletely changed.

completely fits way better there. comprehensively sounds a little intense or overstated.

I didn't actually like coffee at all a few years ago actually, but sionce I drank an espresso that my brother made, the whole concept of mincoffee for coffeme has comprehensivetotally changed.

The placement of "actually" in this first part isn't wrong, and is probably the kind of thing I would say myself in day-to-day English, but it feels just a tiny bit better for "actually" to be right before the verb "like" for some reason. This is probably because you want to emphasize that you DIDN'T like coffee, and the amount of years ago it was that you didn't like it isn't the most important part about this clause. Whether it's at the end or the beginning, "actually" still emphasizes the entire clause, but it emphasizes whatever it is closest to even more. It doesn't matter much for very short sentences like "I went to the party actually", but as this clause is a bit longer, it feels a little better to have it earlier in the sentence.


"The whole concept of mine for coffee" is a little bizarre. It feels like you are talking about a different concept you invented, and how it relates to coffee. Which I don't think is what you mean. You probably don't mean you OWN the concept of coffee, so I've rephrased it to sound more natural.
You could also re-arrange it and put "for me" at the end: "the whole concept of coffee has totally changed for me."

"Comprehensively" is a pretty formal word. I would probably say "completely" or "totally". Where I live at least, I've usually only seen "comprehensive" used in very formal settings like education. Example: "This is a comprehensive exam that will test everything you've learned this semester."

I didn't like coffee at all a few years ago actually, but ever since I drank espresso that my brother made, the whole concept of mine for coffee has comprehensively changed for me.

"the whole concept of x for me has completely changed" or "the whole concept of x for has completely changed for me" is a natural sounding phrase for expressing emphasis.
"comprehensively' is a little formal/learned (it's a slightly fancy word), but there's nothing wrong with using it. it too expresses your emphasis very well.
"concept" is a slightly more fancy way of saying "idea."
this sentence is totally something I can imagine a native speaker saying.

"concept of mine" doesn't work in this situation because it sounds like you're saying "I invented the concept of coffee." I hope this helps.

I didn't like coffee at all a few years ago, actually, but. Ever since I drank espresso that my brother made, the whole concept of mine formy opinions on coffee hasve comprehensively changedleted changed/did a 180.

I gave two options on rephrasing the last part of your sentence. “Doing a 180” is an idiom that means that your opinion has suddenly changed. Here's a more complete definition of "doing a 180": https://dictionary.cambridge.org/us/dictionary/english/do-a-180

I actually didn't like coffee at all a few years ago actually, but since I drank an espresso that my brother made, the whole concept of mine formy opinion of coffee has comprehensively changed.

I didn't like coffee at all a few years ago actually, but since I drank espresso that my brother made, the whole concept of mine for coffee has comprehensively changed.