Il Casaro Osteria

The story

Crafted with passion, served with love

An Italian Osteria on Union Street

Il Casaro Osteria occupies a comfortable corner of San Francisco's Union Street neighborhood, bringing the spirit of an Italian osteria — unhurried, convivial, rooted in honest cooking — to one of the city's most beloved residential corridors. The restaurant earned a 2 Forks distinction from Gambero Rosso, Italy's most authoritative food and wine guide, a recognition that speaks to the kitchen's commitment to doing things properly.

Part of a Trusted San Francisco Family

Il Casaro Osteria is part of a small group of sister restaurants with deep roots in San Francisco, including Il Casaro Pizzeria and the storied North Beach Restaurant. That lineage matters: it signals a genuine Italian sensibility passed through a network of kitchens that take the source material seriously, not a trend-chasing concept.

How Dining Works Here

The restaurant operates as a walk-in-friendly space with reservations available for groups up to ten. A portion of the dining room is always held for walk-ins, keeping the atmosphere open and neighborhood-facing rather than exclusionary. For larger gatherings — celebrations, corporate dinners, or private events — the space scales gracefully: semi-private dining accommodates up to 60 guests, and full restaurant buyouts are available. Groups of ten or more are offered a curated prix fixe menu designed specifically for the occasion.

Lunch and dinner are served daily, with extended Friday and Saturday hours and a happy hour program rounding out the week.