All the necessary food groups
So called "food staples".
Sounds like a good time
Aha! I always knew milk and cookies were a gateway to the harder stuff
"dobrze" is an adverb "well/good". You need an adjective, a masculine one to match the masculine noun "posiłek".
Dziękuję bardzo Jellei! :)
Wino i ser, surely? ;)
"Ciastka" should also be a correct answer.