“Consumers are interested in sophisticated experiences that are beautifully delivered, which we’ve seen happen on the Web and with products like the iPhone,” said Tony Conrad, a partner at True Ventures, which was an early investor in the coffee company Blue Bottle. “Now, we’re seeing that happen with food and beverage.”

Still, some tech analysts and venture capitalists are skeptical that these companies, with their factories and perishable products, can reach the scale and market valuations of big Internet companies.

“I don’t see a multimillion-dollar business coming out of any of these companies,” said Susan Etlinger, an analyst with the Altimeter Group, a firm that advises companies on how to use technology. “The majority of Americans will not likely be able to participate, they’re simply too expensive for them.”

Venture capitalists have strayed from pure technology to food before. Restaurant chains like Starbucks, P. F. Chang’s, Jamba Juice and, more recently, the Melt, were backed by venture capital. Recipe apps and restaurant review sites like Yelp have long been popular.

But this newest wave of start-ups is seeking to use technology to change the way people buy food, and in some cases to invent entirely new foods. Investors are also eager to profit from the movement toward eating fewer animal products and more organic food. They face a contradiction, though, because that movement also shuns processed food and is decidedly low-tech.

“It’s not Franken-food,” Mr. Kaul of Khosla Ventures said. “We’re careful not to make it sound like some science experiment, but there is technology there.”