Healthiest drink

Hello,

I have a new boyfriend, and he’s a drinker. He’s a very sensory person, so he likes the act of drinking itself. He’s a very anxious person, so he likes relaxing with a drink. However, he doesn’t drink straight liquor, because he used to drink too much and I guess it’s just a bad idea. So, he’ll often drink white claws. And he might drink 1,000 calories of white claws at night. I don’t want to ask him to stop drinking, because we haven’t been together that long and I smoke weed, so I don’t want to be a hypocrite. But, I think it would be better if he drank something that was healthier. Suggestions for a healthy homemade drink that isn’t too strong, so he can drink a lot in one night and get a little buzzed but also minimize abuse to his body?