Week 12 Session: Final pitches and the unplugged picnic

This week’s question: what would you keep cold if cold were expensive, and what would you have to relearn to manage without it?

Inherited from week 11: preservation without a plug is possible, partial, and demands knowledge. This week you say where you think the line should sit.

Before the session#

Prepare a five-minute pitch on your reconstruction proposal — a spatial design, an art installation, a behavioural experiment report, a protocol, a policy, or an argued refusal. Not slides. Three things: the proposal, the argument for it, and the strongest objection you have not answered.

Bring food that needs no refrigeration. Room-temperature bread, fresh fruit, ambient drinks, nuts, preserves, ferments from last week’s jars if they are ready. Tell us about allergens.

Reread your week 1 notes. Most people are surprised by them.

In the session#

• Final pitches (50 min). Five minutes each, questions from the room. The two questions we always ask, so prepare for them:
  • Who is this for? A proposal that only works for someone who can shop three times a week and cook every night has answered an easier question than the one asked.
  • What does it ask them to give up? Every proposal trades something — convenience, reassurance, money, time, or the freedom not to think about it. A proposal that claims to cost nothing has not been finished.
• The objections, properly (20 min). The strongest cases against everything this course has argued: the medical and vaccine cold chain, reduced foodborne illness, improved year-round nutrition, and the charge that blaming an appliance for consumer capitalism is a category error. You should leave holding these rather than having dodged them.

The unplugged celebration#

Then we stop talking and eat.

Room-temperature bread, fruit, ambient drinks, last week’s ferments. No cold chain, no fortress, one afternoon. It is not a stunt — it is the twelve-week argument in embodied form, and the most persuasive thing in the course, which is slightly humbling for those of us who spent eleven weeks making it in words.

Take one thing out

Week 11 argues that most of the line between needs cold anddoesn't is convention that hardened rather than physics. Here is that argument at a scale you can test this week. Pick one.

One item leaving my fridge

Butter

Tomatoes

Bread

Onions, garlic and potatoes

Unopened condiments

Eggs

What actually happens to each of these

Butter

Salted butter keeps for days in a covered dish at room temperature, which is how it was kept for most of its history. It also spreads, which cold butter famously does not. Keep it covered and out of the sun, and buy it in smaller amounts.

Tomatoes

Cold actively damages a tomato: below about 12°C the compounds responsible for its flavour stop being produced and the flesh goes mealy. Refrigeration is close to the worst thing you can do to one. This is the easiest pledge on the list to keep.

Bread

The fridge is the fastest way to stale bread — starch retrogrades quickest a little above freezing, so chilled bread goes stale faster than bread left on the counter. A bin or a bag for a few days; the freezer for longer. The fridge is the one option that is worse than doing nothing.

Onions, garlic and potatoes

All three want dark, dry and ventilated, not cold and humid. Cold turns potato starch to sugar, which is why refrigerated potatoes taste faintly sweet and go gritty. Keep them out of the fridge and away from each other.

Unopened condiments

Soy sauce, vinegar, honey and most hot sauces are shelf-stable by design — they are preserved things, which is the entire point of them. Check the label for whether it asks for refrigeration after opening, and ignore the door shelf until then.

Eggs

This one depends on where you live, and that is exactly why it is on the list. Where eggs are washed before sale the protective cuticle is removed and they need refrigeration; where they are not washed they sit out quite safely, which is why supermarket shelves look different in different countries. Same egg, same biology, opposite advice — the boundary is regulation, not physics.

Nothing on this list is a safety risk, which is why nothing riskier is on it. Refrigeration earns its place for raw meat, fish, dairy after opening and ready-to-eat food — and for the vaccine cold chain, which is not the same argument and never was.

Afterwards#

The Final Project is due Friday 28 May, and Participation is assessed to the same date.

Then the course is over, and the thing it wanted was never really about refrigeration. It was about what a household is willing to hand to a machine, on whose terms, and what it stops knowing once it does.

Thank you for a genuinely good semester. Both of us remain contactable — several final projects from previous years turned into theses, and two turned into objects.