【Skill 4】Understand whether the desserts are good.
Put these 3 skills together to understand whether or not the desserts are good
[Skill 1] Understand whether or not the desserts are good from 美味し (delicious) and くな (not)
[Skill 2] Understand whether or not the desserts are good from おいし (delicious) and くな (not)
[Skill 3] Understand that the desserts are not good from expressions such as イマイチ (not very good) and 微妙 (so-so)