Bone broth has been popular in some places in the U.S. for the past few years, and now it's arrived in Madison, with lunch-time pop-ups from the kitchen at Fresco.

The pop-ups are being held in the lobby of the Madison Museum of Contemporary Art, 227 State St. The soups are served in cups to-go, but some people hang out on the museum's couches to drink their broth.

"Good Broth from the Fresco kitchen" is running from noon to 2 p.m. Tuesday through Friday until March 16. There are also extended delivery hours through EatStreet (noon until 8 p.m. Tuesday through Friday).

"This is no commercial broth," the restaurant group Food Fight, which runs Fresco, said in an email. "Chef Giovanni Novella's recipes are made from grass-fed animals and fresh produce. The roasted bones, fresh vegetables, herbs, water, and apple-cider vinegar simmer in a stock pot for over 24 hours to breakdown the bones and release their nutrients, creating a rich, nourishing bone broth."

Classic chicken broth is $5 for a 10-ounce cup and $7 for a 16-ounce cup. "Good Broth" (grass-fed beef and chicken) is $6 for a 10-ounce cup and $9 for a 16-ounce cup.

Making broth is one of the oldest-known cooking techniques, and its newfound popularity could have something to do with the rise of the paleo diet. The craze has spawned a number of recent cookbooks.

Bone broth fans say the collagen and amino acids in bone broth help heal everything from achy joints to the common cold. For some, it's a daily restorative drink.

A slow simmering of bones can extract rich flavors and also create a stock to be used as the foundation for a soup, stew or risotto.

"Bone broth is rich, satisfying, high in protein, low in calories, and contains collagen, essential amino acids, and minerals. It's not only delicious, it's for your health," the Food Fight email said.

Read more restaurant news at go.madison.com/restaurantnews.

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