Speciality food usually covers those sectors: it doesn't necessarily mean hand-made but is more niche than giant factory lines.
Maybe there is a middle ground term that I can't presently think of tho...

I would use the term "artisanal" here as this word is becoming more and more recognised in the UK and defines a certain sector of either hand crafted, farm produced, or finely made products.

"Artisanal food encompasses breads, cheeses, fruit preserves, cured meats, beverages, oils, and vinegars that are made by hand using traditional methods by skilled craftworkers, known as food artisans.[1] The foodstuff material from farmers and backyard growers can include fruit, grains and flours, milks for cheese, cured meats, fish, beverages, oils, and vinegars. The movement is focused on providing farm to fork type foods with locally sourced products that benefit the consumer, small scale growers and producers, and the local economy." economy.https://en.wikipedia.org/wiki/Artisanal_food

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Note added at 1 hr (2018-07-26 12:26:03 GMT)
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You could say "The artisanal food market" in order to incorporate the idea of "commecial".
ie:
"There's no denying that the ARTISANAL FOOD MARKET is booming. From home brewing and smoking meat to handmade cheeses, chutneys and preserves, Britain is teeming with tasty gourmet fare, but just who are the people behind the goods?"
https://www.belfasttelegraph.co.uk/life/weekend/from-the-kit...