It's about 10 minutes to AEON Taikou from Nagoya Station. It's open 24 hours a day, so it'll still be open even after you've been out bouncing around town all day. If you visit after the evening rush, you may also have a chance to buy sushi, sashimi or a bento at a discounted price.

AEON Taikou is a pretty standard Japanese supermarket. You'll find fresh produce, meat, and fish, frozen foods, eggs, soy products, pre-cooked food, and beverages. The fruit here is very fresh and worth trying. You'll find everything you need for a balanced diet.