Potterverse characters and tea. - Cold Brew Coffee?

[Carol]

Ali:
> Oh I agree on the creamy part.  I take my coffee with cream (or ice
cream) if I take anything at all.  However, Carol mentions how she
doesn't like the acidity of creams and the like, which means that
she's probably not going to go that route - a good quality ice cream
tends to be higher in butterfat and therefore acidic. <snip>

Carol responds:

Right. :-)

Ali:
Therefore, I recommended vanilla simple syrup.  It's a treat (after
all, vanilla is $1-10 per pod and wholly wonderful) and adds something
to coffee that may serve as an alternate addition to coffee.
> 
> That's all I gots. :)

Carol:
Oh, no. Don't tell me that you crush your own vanilla pods! Won't
vanilla extract do (real, not artificial)?

Carol, now wondering whether to use the flat side of her silver knife
as Teen!Snape recommends for a sopophorous bean or puncture it with
something sharp as you would with a Snargaluff pod