You probably want to follow some variation on these instructions. Also, it’s very important to boil the milk; that stops it from curdling (and don’t worry about the milk going off – there’s enough alcohol in this stuff to kill most bacteria, so it keeps basically forever if you chill it).
So yeah, Feebas and Milotic. I think they’re interesting because they say something cool about Pokémon’s conception of beauty. Milotic, of course, is a very conventionally beautiful animal, but in order to get there, you have to make Feebas beautiful (or at least, that’s how it works on games that have contest mechanics, like the ones that introduced Feebas). That seems next to impossible for any conventional understanding of beauty. I think what’s involved in making Feebas beautiful is probably more about developing its confidence, poise, and self-esteem, to the point that even its proverbially “shabby” appearance begins to seem, to onlookers, like a uniquely fitting aesthetic. It’s not about what Feebas physically looks like; it’s about how well it “wears” that appearance, which I think is quite a positive message.