My nearest supermarket is is a 3 minute walk away. I walk to the supermarket. We probably shop 3-4 times a week.
Buy food to cover 2 dinners and breakfast. Lunch is leftovers from previous dinner. I have a small fridge, so I can't fit a week's worth of food in there anyway.
Oh, and we transport everything in a backpack and / or shopping bags (with handles, only seen those paper bags without handles in American films).
