From garden to jar: developing a food product

Every snack on a supermarket shelf started as an idea, a rough recipe and a lot of tasting. Food technologists develop products the same way designers do: understand the people, make a version, test it, improve it.

Start with the ingredient

Autumn in Aotearoa brings more feijoas and apples than anyone can eat. Fruit that's bruised or small is often thrown away, but it can make delicious chutney, leather or juice. Processing lets people use food that looks imperfect and spreads a short harvest across the whole year.

Write a specification

A food spec says what the finished product must be like, using things you can measure or taste: sweetness, crunch, colour, how long it keeps, cost per serve and which allergens it must not contain. The Technology curriculum calls these objective measures.

Test it fairly

Sensory scientists use our five senses to judge food. To keep a taste test fair:

If tasters say it's too sour, change only the sour part, then test again. Changing three things at once means you won't know which one helped.

Kai with a story

Food carries culture. A nana's chutney, a family rēwena bug or a Korean grandmother's kimchi each hold knowledge built up over generations. Learn from the people who own those traditions and give credit. Groups like the Heritage Food Crops Research Trust in Whanganui keep old varieties of fruit and vegetables alive so their flavours and stories aren't lost.

Food innovation can be homegrown too. In 1992 Len Light developed the EasiYo home yoghurt maker: a sachet of milk powder and cultures, and an insulated container that keeps the mix warm so the bacteria can ferment it. A simple design made an old technology easy for anyone to use.