The children, 11 and 12, were invited into the man’s home in Götene when they were out trick and treating on Saturday evening.
The man, who is in his forties, offered each of the children a glass of what he claimed was non-alcoholic wine. In fact the drink was a mixture of wine and liqueur.
When the children both spat out their drinks in disgust, the man poured wine over both them and their goodie bags.
The incident was duly reported to the police and the man is now being investigated for harassment.
“He has confessed and blamed it on the fact that he was drunk,” police spokesman Jerry Nyberg told news agency TT.