NEW YORK — Kraft Heinz is attempting to buy Unilever in a $143 billion deal that would join the U.S. maker of cheeses and lunch meats with the European producer of mayo, teas and seasonings in a global powerhouse.
Unilever rejected the approach and called the price too low, while Kraft Heinz says it's still interested in a deal. The shares of both companies surged to new highs as investors saw prospects for cost cutting.
A combination of Kraft Heintz, which sells Oscar Mayer meats, Jell-O pudding and Velveeta cheese, and Unilever, which owns brands including Hellmann's, Lipton and Knorr, would rival Nestle as the world's biggest packaged food maker by sales.
That might not lead to big changes that customers would notice on the supermarket shelves. But it's people's changing tastes, shifting away from boxed and canned groceries in favor of items that seem fresher or healthier, that's driving deal-making in the food industry.
Companies like Kraft Heinz, itself formed from two century-old businesses in 2015, are trying to find new avenues for growth amid heightened competition.
Part of the challenge is the proliferation of smaller food makers marketing more wholesome products, which makes it harder for the established companies to drive up sales simply by selling more of their well-known products or by raising prices, as they have in the past.
"That obviously has its limits," said David Garfield, head of the consumer products unit at consulting firm AlixPartners.
Instead, companies are being forced to dig deeper to find cost efficiencies or tap into new markets, Garfield said. That can include mergers that result in consolidated manufacturing systems, or that give companies access to distribution networks in regions of the world where they don't have a big presence.
Those were some of the factors that drove Oreo and Chips Ahoy maker Mondelez International — which was split from Kraft in 2012 —to make an unsuccessful takeover bid for Hershey last year before retreating. And they were among the reasons cited by executives in the Kraft Heinz tie up, which was engineered by Warren Buffett's Berkshire Hathaway and 3G Capital, the Brazilian investment firm with a history of taking over companies and aggressively cutting costs.
Bernardo Hees, a 3G partner, has slashed jobs and pursued other savings, some of them granular, as CEO of Kraft Heinz. In a 2015 memo to employees, Hees reminded them to print on both sides of the paper, reuse office supplies like binders and turn off computers before leaving the office to cut down on energy costs.
The company also stopped stocking the corporate office with free Kraft snacks.
Unilever follows Nestle, PepsiCo and Mondelez as the world's biggest packaged food maker by retail sales, coming in ahead of Kraft Heinz, according to Euromonitor International. In addition to its food products, it sells health and beauty products such as Axe body spray and Dove soap.
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In the meantime, food and drinks companies like Coca-Cola Co., General Mills Inc. and Kellogg Co. are also under pressure from Wall Street to slash costs and find products that suit the shifting customer preferences.
While mega-deals are tough to pull off, they've made an array of acquisitions of smaller, faster-growing brands. Campbell Soup is trying to shed its canned-food image, and has bought juice and bagged carrots maker Bolthouse. General Mills now owns Annie's, Hormel owns Applegate meats and Justin's nut butters, and Dr Pepper recently bought Bai Brands, a maker of drinks sold as rich in antioxidants.
Shares of Kraft Heinz rose 8 percent Friday. Unilever PLC jumped almost 12 percent.