65-70% milk ratio to me is perfect. It varies slightly with the cereal. Heavier cereal requires more milk. Also if you’re eating cereal that becomes chocolate milk at the end, you might want more milk to start off with. Basically you’re trying to saturate the cereal, but not make it soggy. Enough milk as to not have to make a second trip for milk just to be able to ingest it. It’s a trial and error scientific method, perfected at a young “Saturday morning cartoons and cereal” age.
the Gf does way too much milk. To the point where the cereal becomes soggy. This is the incorrect way. Also, she pours the milk first, THEN the cereal. Also incorrect. But shes dairy intolerant, and has only been eating cereal a few years. Started as an adult, so she’s got a ways to catch up.