I just realized the Carlomens actually drink wine.
"It was a fine meal after the Calormene fashion. I don't know whether you would have liked it or not, but Shasta did. There were lobsters, and salad, and snipe stuffed with almonds and truffles, and a complicated dish made of chicken-livers and rice and raisins and nuts, and there were cool melons and gooseberry fools and mulberry fools, and every kind of nice thing that can be made with ice. There was also a little flagon of the sort of wine that is called "white" though it is really yellow."
"A boy in the street made a beastly joke about Queen Susan," said Prince Corin, "so I knocked him down. He ran howling into a house and his big brother came out. So I knocked the big brother down. Then they all followed me until we ran into three old men with spears who are called the Watch. So I fought with the Watch and they knocked me down. It was getting dark by now. Then the Watch took me along to lock me up somewhere. So I asked them if they'd like a stoup of wine and they said they didn't mind if they did. Then I took them to a wine shop and got them some and they all sat down and drank till they fell asleep. I thought it was time for me to be off so I came out quietly and then I found the first boy—the one who had started all the trouble—still hanging about. So I knocked him down again. After that I climbed up a pipe on to the roof of a house and lay quiet till it began to get light this morning. Ever since that I've been finding my way back. I say, is there anything to drink?"
Both quotes from Chapter V Prince Corin in The Horse and His Boy.
It's very interesting to examine this in light of the whole "Tash = The Other Religion" discussion.