Lettuce

It is winter for many long months, and although iceberg lettuce
is always available, its price might vary greatly. In summer, it is .99$CAN;
last Christmas it was 3.99$. Currently, it is 1.99$. Under these circumstances,
and because one tends to eat differently in winter, one learns to buys lettuce
and other greens in a different fashion as well.

Hydroponics - I believe, initially developed for the US Space Program -
grows lettuce in water and nutrients rather than soil. The result, a Boston lettuce
with a subtle taste, is available here all year because it is grown just north
of Montreal. Two heads of lettuce are offered at a stable price of 3.00$.

They come in a plastic container, with instructions to rinse and serve, and will last
a long time without wilting. A few leaves a day will keep me happy as
I sprinkle these with lemon, on chili, in a sandwich, even on soup.

My current stash of baby spinach, from the US. Marked to last till Feb 15, 2017.

One does learn to survive.