Back in the '80s and '90s, grabbing dinner at the prepared foods section of your neighborhood grocery store meant picking up a rotisserie chicken, some gloppy potato salad, and maybe — if you were feeling ambitious — a trip through the salad bar.

While those rotisserie chickens haven't gone anywhere, these days, new high-end prepared food offerings have turned sections of the supermarket into full-blown restaurants.

Wegman's, a small supermarket chain based in Rochester, N.Y., features a Market Café that offers shoppers more than your average neighborhood diner. Pizza, sushi, stir-frys to order, homemade soups, even something they call a "large fish fry dinner." Whole Foods, the granddaddy of luxe prepared foods, goes even further. Here, depending on the store, you might find a Parisian cafe, a pizza bar, a BBQ shack, a sushi bar, a raw foods bar, a taco bar, a sandwich bar, or a full-out wine bar.

So what's the motive behind this new ready-to-eat bonanza? Profit, of course. Company execs want to keep customers returning to the store, and more visits mean more shopping overall.

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