I shop for food once a week. I plan my meals, but not the order I'll eat
them in. I usually cook a big, freezable meal once a week. A pasta
sauce, a soup, a stew, or a tajine. I guess curries would be great, too.
New territory to explore, for me. Should try that soon.

During the week, I defrost some things for the days when I won't have
time to cook before going to the gym. Some days are meals away from
home, but those are rare. Any days left are a joy: I get to cook
something fresh and I have time to put into cooking. I do plan those
meals as part of the weekly plan. Since I typically need fresh veg etc
for them, they tend to be cooked within the first couple of days after
the weekly run to the grocery store.

Lunch and breakfast tend to be roughly the same in style most of the
time,e usually they are sandwiches. Since they are habits, I don;t think
of shopping for them as planned shopping. Although technically, they are
planned, really.

I like it this way, Planning ahead means I won't have much waste, which
is always a risk in a one-person household. And I don't have to spend
much time shopping.

Yes, I use a list.