What do Japanese teenagers like?

Answer 1

Anime! Try Full metal Alchemist or Naruto or Bleach. Maybe even Higurashi no naku koro ni!!

Since this is under food, I'm assuming you mean food-wise. Like in most places, children eat what they were raised on, and like most of the things their parents make, which would be a rice-staple diet with fish as the most common thing to go with it. Treats are mainly sweet or salty. Buns with sweet filling, mochi, and imported goods like chocolate seem to be common. Then there are fried sesame goods and packets of salty crunchy food. I'm not really sure about what's popular among teenagers in particular, though. Sorry.

They can't drink until they're twenty, though. I'm pretty sure that Sapporo beer and other strong drinks are popular.