Seasonality And What It Does To A Weekly Menu

Seasonal eating is usually presented as an environmental position. Its more immediate effects are on flavour, cost and the variety of a weekly menu, and those follow from how produce is grown and moved.

Why in-season produce tastes different

Fruit and vegetables destined for long transport are harvested before full ripeness so they survive handling, and much of their flavour development stops at that point.

Sugars, acids and volatile aromatic compounds accumulate in the final stage of ripening on the plant, and that stage cannot be reproduced afterwards.

Locally grown produce in season is picked closer to ripeness because it travels a short distance, which is the whole of the flavour difference people notice with summer tomatoes.

The cost mechanism

Supply peaks in season, and prices fall accordingly. The same item out of season requires either long-distance transport or heated growing, both of which are expensive.

This means the produce that is best is also the cheapest at the same moment, which is an unusually convenient alignment.

Buying at the peak in larger quantities and preserving some of it by freezing, drying or fermenting extends that alignment past the season itself.

Storage as a second season

Some produce is bred and cured for storage rather than for immediate eating, which is why root vegetables, squash, onions and apples are available long after harvest.

These stored items are genuinely local out of season, unlike the imported soft produce sitting beside them, and they cost accordingly.

Curing changes them chemically. Winter squash converts starch to sugar during storage, so a cured squash is sweeter than one cut fresh from the field.

What it does to the cooking

A menu that follows the season rotates through techniques automatically, because what is available suits different methods at different times.

Summer produce leans towards raw preparations, quick heat and acid, while winter produce rewards roasting, braising and long simmering.

The result is more variety across a year than a fixed repertoire produces, even though the choice at any given moment is narrower.

Nutrient content across the seasons

Vitamin content in fresh produce declines during storage and transport, particularly the water-soluble and light-sensitive vitamins.

Frozen produce is processed within hours of harvest, so out of season it often carries more of those vitamins than the fresh item that travelled for a week.

The practical position is therefore seasonal fresh where it is available and frozen where it is not, with imported soft produce treated as an occasional purchase rather than a staple.