Today I have had espresso

This is a little piece I wrote today to my cousin's wife, given that she was so against my having espresso that she put me in an informal rehab, just so I would keep away from that infernal thing:

Today I have committed a deed rather grim.
I have tasted the juice
of that forbidden fruit.
Yes, I have ingested caffeine.

Espresso, as you know,
is that craved drug of old;
the draw that you deplore,
and yet, with it I roam in my abode,
with that drug in my veins, herein.