Why a rye loaf keeps for four days and a white one does not
Bread does not go stale because it dries out. It goes stale because the starch recrystallises — which is why acidity, cr...
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Walk into any shop with a real counter and nobody asks you to buy a pack. You say how much you want, it goes on the scale, you pay for what is on the scale. That is the oldest transaction in food retail and it is also, for reasons that have nothing to do with shoppers, the one that online grocery mostly threw away.
Pre-packing exists because it is easier to pick, easier to scan and easier to ship. None of those three reasons is about the person eating the food.
Four of our eight aisles — vegetables, fresh fruit, the meat counter and the cheese cut from the wheel — are priced per kilogram, and you order the weight you want, whole or fractional. Here is what that actually changes.
The gap between what a recipe needs and what a pack contains is the single largest source of food waste in a household kitchen. A soup wants two carrots; the bag holds a kilo. A sandwich wants eighty grams of cheese; the pack is two hundred and fifty. The excess is not free — you paid for it, and about a third of the time you will throw it away.
The price on a weighed product page is the price for one kilogram. The quantity field takes fractions, so 0.5 is half a kilo and 0.25 is two hundred and fifty grams. The basket multiplies the two, and that is the figure you pay — there is no per-pack surcharge hidden behind it.
The first is thinking in packs. It takes about three orders to stop, and the moment it clicks is usually the first time you buy 0.3 kg of steak for one person and realise you have been buying two portions to eat one for years.
The second is storage. Loose produce is not washed and not sealed, and both of those are on purpose — an unwashed carrot keeps three weeks where a washed one keeps a week, and a sealed bag of spinach traps the ethylene that turns it to slime. Keep root vegetables cool and dark, keep leaves loosely wrapped in cloth, and never refrigerate a tomato.
Pick a vegetable, a fruit and something off the meat counter, and order the weight you would actually cook this week. Delivery is next day on orders placed before 14:00.
Bread does not go stale because it dries out. It goes stale because the starch recrystallises — which is why acidity, cr...