Food trends appear to arrive spontaneously and generally follow a route that is traceable and reasonably consistent.
The usual path
Origin in a specific cuisine or region, frequently in immigrant communities cooking for their own communities.
Adoption by restaurants serving a wider audience, generally with adaptation.
Coverage in food media, which amplifies awareness.
Appearance in chain restaurants and prepared food.
And finally supermarket products, by which point the version bears limited relation to the original.
Which takes years, and the ingredients were available throughout to anyone who looked in the right shops.
Why the origin gets erased
The pattern where a dish becomes fashionable while the communities who cooked it are absent from the coverage.
Which has attracted sustained criticism and is fairly straightforward to observe.
Attribution costs nothing, and the businesses that do it generally have better relationships with the communities the food came from.
The health halo cycle
An ingredient acquires health claims, demand rises sharply, and the claims are subsequently found to be overstated.
Which has happened repeatedly with specific grains, oils, berries and supplements.
The consistent pattern is that a genuine nutritional property is generalised into claims the evidence does not support.
Supply consequences
Sudden global demand for an ingredient produced in a limited region has real effects.
Price rises can benefit producers and can also price local populations out of a staple, which has been documented for several ingredients.
Production expansion can cause environmental pressure where the crop is water-intensive or where land is converted.
Which is why the ethics of a food trend depend on the specifics rather than on a general principle.
Social media effects
The path has shortened considerably.
A dish can go from obscurity to national demand within weeks, which no supply chain can respond to.
Which produces shortages, price spikes and a large number of poor imitations, followed by decline once attention moves.
Visual appeal has become a stronger selection criterion than flavour, which is visible in what trends and what does not.
What lasts
Ingredients and techniques that solve a real problem or that genuinely taste good tend to remain after the attention passes.
Which is why some trends become permanent additions to how people cook and others disappear entirely.
Fermentation, for example, was a trend and has persisted because the results are genuinely good and the techniques are useful.
Restaurant trends specifically
Driven partly by cost and operations rather than by taste.
Small plates spread partly because they suit kitchen efficiency and increase spend per table.
Open kitchens save space and provide entertainment.
Limited menus reduce waste and simplify purchasing.
Which means several apparent aesthetic movements have operational explanations.
The useful attitude
Trying things is good and the framing that treats them as discoveries is generally inaccurate.
Which suggests going to the source where possible — the restaurants and shops serving the community the food came from — rather than to the adapted version.
It is usually cheaper, better, and the people running it know considerably more about it.
Menus and cost
Ingredient prices drive what appears on menus more than fashion does.
Which is why previously cheap cuts became fashionable and then expensive, and why the cycle continues onto the next cheap thing.
The pattern is consistent enough to predict — a chef finds something underused, it becomes popular, demand raises the price, and it stops being interesting.
Health claims and regulation
Claims about specific foods are regulated where they concern health, and the permitted claims are narrower than marketing implies.
Which means most trend-driven health assertions operate through implication rather than statement.
The reasonable position
Trying things is worthwhile.
Treating any single ingredient as transformative is not supported by anything.
And the version worth eating is generally the one made by people who have always made it.
Plant-based products
A category that grew rapidly and has since slowed in several markets.
The products improved substantially in texture and flavour, and the sustained demand was smaller than early growth projected.
Which reflects that the initial buyers included many trying it once, and repeat purchase determines a category rather than trial.
Delivery and its effects
Food designed to survive a journey differs from food designed to be eaten immediately.
Which has shaped menus toward dishes that travel, and it is why some restaurant food is disappointing when delivered.
Cooking at home from a trend
The version worth learning is generally the technique rather than the specific dish.
Which persists after the trend passes and applies to other things.
Seasonality as the counterweight
Cooking what is in season is the opposite of following trends and produces better results consistently.
Which is unfashionable precisely because it does not change with attention, and it is the most reliable guidance available.
It is also cheaper, since abundance drives price down at exactly the moment quality is highest.