This is Peter F Hamilton's Night's Dawn trilogy.
It's large scope space opera with multiple interweaving storylines, and the one you recall is centred on Joshua Calvert. He initially lives in a sentient habitat called 'Tranquillity', scavenging alien remains. Having found a valuable relic, he uses the cash to repair the ship the 'Lady Macbeth', recruit a crew, and go to work as a trader.
The drink referred to is 'Norfolk Tears', very rare and expensive. He ends up with a large supply by being alert to what one of the families really want, and ends up staying at their home where he has an illicit relationship with the teenage daughter, Louise CavanaghKavanagh.
She discovers that she is pregnant after he leaves, but they do meet up again at the end, after dealing with the dead possessing the living, and travelling about a quarter of the way around the galaxy.
A great read, but not a small one!