it really depends on whether the maid drinks a lot or not.
my bro's 2 maids are v v 'dai sik', eat a lot and drink 2 bowls of soup each time.
if this is the case, i will use 燉 pot to boil the soup not share with them.
I also let my maid to eat 海參花膠鮑魚. Honestly, she won't eat too much.
Sometimes I ask her to boil 海參花膠鮑魚 soup with pork, I don't think she drinks the pork soup lor....hahaha