* A Fall Family Fair is on tap from 2 to 6 p.m. Saturday at Marathon Farm, 27th and Master streets. There will be live music, pumpkin-carving and other fall activities, food, beer and a silent auction to benefit the farm, which grows organic produce for Marathon Restaurants and for a neighborhood farm stand. Purchase $1 tickets toward food (five tickets), beer (four) and kids activities (two).
* Opa (1311 Sansom St., 215-545-0170), the modern Greek restaurant-bar, has a fall menu featuring curried apple-squash bisque, an arugula and squash salad, and a lamb chop with pistachio puree. The restaurant also has started serving lunch weekdays from 11:30 a.m. till 2:30 p.m.
* Watch celebrity chefs in action (Jose Garces, David Boyle, “Chopped” host Ted Allen and more), talk with wine experts from Robert Mondavi and sample much food and drink this weekend during the Philadelphia Food & Wine Festival at Valley Forge Convention Center (1160 1st Ave., King of Prussia, gourmetshows.com), 4-8 p.m. tomorrow, 11 a.m.-7 p.m. Saturday and 11 a.m.-3 p.m. Sunday. $30 in advance ($40 at the door), ages 6-12 $5, under 6 free. Seminars, Chefs onstage series and VIP Cocktail Party are additional.
*Oh, you bake? Well, maybe not yet, but you will after attending the eight-week workshop series Adriane Appleby is teaching at Green Line Cafe (4239 Baltimore Ave., 215- 222-3431) starting Monday from 5:30 to 8 p.m. Appleby’s résumé includes stints at Amada and Betty’s Speakeasy. She’ll discuss pretty much every baked good going, from cookies to tarts and cakes. She also teaches single classes on Tuesdays from 5:30 to 8 p.m. Up tomorrow: cookies. Email firstname.lastname@example.org.
* It was inevitable they’d find each other across a carbo-loaded landscape: beer and doughnuts. Krispy Kreme is partnering with Devil’s Den (11th and Ellsworth, 215-339-0855) for what they contend is our city’s first- beer and doughnut pairing from 11 a.m. to 2 a.m. tomorrow. $10 a pairing, with $4 going to the nonprofit Philadelphia Animal Welfare Society. Try the Original Glazed Doughnut with PBC’s Joe Porter, the Cinnamon Bun Doughnut with Yards’ Thomas Jefferson Ale, and the Pumpkin Spice Cake Doughnut with Weyerbacher’s Verboten.
* Radio producer and former Daily News restaurant critic Lari Robling has created five podcasts (with recipes!) tracing French culinary history, “Vive La France: French Cuisine and the Evolution of Modern Cooking.” This series is part of the American Philosophical Society Museum’s “The Greenhouse Projects,” which put a contemporary spin on issues raised in the museum’s current exhibition “Of Elephants and Roses: Encounters with French Natural History, 1790-1830.” www.apsmuseum.org/vive-la-france.
* Childhood friends chef Jonathan Adams (Pub & Kitchen, The Diving Horse) and artisanal coffee pro Damien Pileggi have teamed up to launch Rival Bros Coffee, a small-batch coffee roaster that will also have a mobile coffee shop, the Rival Bros Truck, at Love Park from 7 to 10:30 a.m. weekdays. RivalBrosCoffee.com.
Email food and restaurant news to Assistant Features Editor Laurie T. Conrad, email@example.com.