Even with their sights set on eternal glory, the well-greaved Achaeans besieging Troy had to break for dinner. Bring bounteous Hellenic fare across the wine-dark sea and straight into your mouth, the skilled breaker of horses, with today’s Groupon to Nostos Restaurant in Vienna. Choose between two options:

• For $20, you get $40 worth of upscale Greek fare during dinner.
• For $10, you get $20 worth of upscale Greek fare during lunch.

Nostos Restaurant quells the moans of ravenous stomach sirens with lunch- and dinner-menu selections made with extra-virgin olive oil, Dodonis feta cheese, and fresh Mediterranean fish. Noontime noshers wrap their hands around the Greek–style burger known as pita bifteki, which comes slathered with tzatziki and is swaddled in a pillowy pita pocket ($13). Show off kindergarten-honed sharing skills with Nostos’s toothsome roster of mezedes (small plates), including a htapodi xidato that features marinated octopus backstroking in a flavorful pool of olive oil, vinegar, and herbs ($11 lunch, $12 dinner). Chefs slow-roast arnaki fournou, the boneless leg-of-lamb entree ($16 lunch, $17 dinner), and they season the fresh grilled sea bass ($26 lunch, $27 dinner) with pure olive oil, lemon, and mermaid tears. Unclothed pitas dive gleefully into dips such as zing-infused taramosalata, a lemony fish-roe mousse ($6 lunch, $6.50 dinner).

Black-and-white photos of Greece from the first half of the 20th century deck the walls of the snowy-white dining room, evoking nostalgia for the good old days when photographs didn't have such foul mouths. Sip on a vinous selection from Nostos’s Dionysus-approved wine list, which gathers dozens of red-and-white Greek-grape nectars. The sugar-laced dessert menu brims with exotic treats such as the galaktoboureko ($6), a semolina-custard confection swathed in phyllo and dusted with honey and cinnamon.