Hermione learned a little more about Snape every time they met. She learned that he hated being interrupted when he was speaking, or when he was working seriously on something.
She learned that he was quite generous, both with knowledge and money, only to those he deemed worthy of either one or both.
He was extremely generous with colourful words when he was really annoyed. When he was angry, he went deathly quiet, and that was the cue to run for it.
She learned that he did things how he figured was best, and usually he was right, of course she already had an idea of this from his old potions' text.
He was a genius, and worked hard to keep up with the current developments in many fields. There was very little that was beyond his ability.
She learned that he had hung out at Muggle bars, and picked up quite a few bits of the local lingua franca, not to mention the swears.
He always had red wine with his dinner while she had sparkling water.
She had plain water with her lunch and he had fresh lime.
He liked his tea strong and no milk. He never added more than one sugar.
He loved Indian curries, so long as they weren't too spicy.
He ate so much but stayed thin (she noted this with extreme jealousy).
His shirts were always fine cotton, always white and always clean.
He smelled of spices and something she couldn't place; maybe juniper and sage.
She learned that she was falling madly and hopelessly in love with him.