Amazon Prime Day works for gadgets. Can it sell cereal and cod?

Amazon.com proved it can use bargain buzz to sell a lot of gadgets on a random day in July. This year, it’s hoping excitement around Prime Day gets shoppers to change how they buy groceries.

Amazon’s fourth annual Prime Day — 36 hours of sales beginning July 16 — will be its first since closing the $13.7 billion purchase of Whole Foods Market.It is offering discounted strawberries, chicken breasts and cod fillets to lure people into its brick-and-mortar stores, as