Intra-family feuds, while often the cause of stress in adult lives, can also create a driving motivation to excel in your work life, in your personal life, and in your hunt for your late grandma's stash of Fabergé bocce balls. Reap the fruits of another family’s rivalry with today’s Groupon: for $20, you get $40 worth of contemporary American fare at Sibling Rivalry.

At Sibling Rivalry, fraternal chefs Bob and David Kinkead square off nightly to craft dueling dinner menus showcasing each brother's flair for creating contemporary American cuisine from seasonal ingredients. Round one consists of starter plates, with each chef offering a variation on a common theme such as pasta, spring salad, or man's role in the cosmos. Chef David’s curry dish incorporates a piquant Moroccan lamb brik ($10), and Chef Bob throws in Vietnamese squid ($12). The competition heats up in the main course, as Chef David's fowl entree, a crispy pressed duck ($24), takes on Chef Bob's spit-roasted half chicken ($23) in a no-holds-barred poultry cage-match. As with every sibling tussle, dessert resolves all tensions, soothing any Mom-loves-you-best anguish with joint efforts such as a decadent chocolate tart drizzled with caramel sauce and sprinkled with sliced almonds ($7).