One thing I would add is I'm not sure how great search engines are at decoding domain names into keywords. I mean some search engines might understand howto.com

One thing I would add is I'm not sure how great search engines are at decoding domain names into keywords. I mean some search engines might understand howto.com would relate to the keywords "how to" but some might just read it as "howto". Because of that I'd say go for howto.com/how-to-drink.