Al Ragù Classic
Slow-braised beef and pork ragù, peas, fior di latte, saffron rice.
CHF 6 / pc
OSA
Arancini & Aperitivo
Est. 2024
Catering · Rheinfelden · Basel Region
A taste of Sicily,
A taste of Sicily,
delivered with care.
Hand-rolled arancini, seasonal aperitivi, and a slow Italian table — brought to your gathering, your office, your wedding.
12+
Arancini Varieties
200
Events Catered
4.9
Avg. Client Rating
Made by
hand,
daily.
hand,
daily.
Our Story
From Palermo's
From Palermo's
family table
to yours.
OSA began in a small kitchen in Rheinfelden, with a Sicilian grandmother's recipe and a stubborn belief that the best food tells a story. Today we cater intimate dinners, weddings, and cocktail hours across the Basel region — but every arancino is still rolled by hand, the way Nonna Carmela taught Chef Alessandro.
We source Carnaroli rice from Lombardy, semolina from Altamura, and seasonal vegetables from regional farms across the Fricktal and Markgräflerland. Slow food, served at a pace that lets you actually taste it.
Chef Alessandro
Founder · Rheinfelden, CH
What We Offer
Four ways to bring an Italian evening to your guests — from passed bites to seated dinners.
- — 01
Arancini Bar
A live station with eight rotating varieties, fried to order in front of your guests. Includes a sommelier-curated dipping flight.
Learn More → - — 02
Aperitivo Hour
Spritzes, Negronis, and Sicilian small plates — cicchetti, bruschetta, and house-cured salumi. Built for the cocktail hour.
Learn More → - — 03
Full Catering
Multi-course seated dinners with Sicilian heart and modern restraint. Antipasti through dolci, served by our team.
Learn More → - — 04
Private Events
Weddings, corporate retreats, milestone birthdays. End-to-end planning with rentals, florals, and front-of-house staffing.
Learn More →
How It Works
A simple process, from first message to last cannolo.
- i.
Inquire
Tell us about your event — date, guest count, vibe. We respond within 24 hours.
- ii.
Customize
A tasting at our Rheinfelden kitchen. We build a menu around your guests and your space.
- iii.
Confirm
Final menu, staffing, and rentals locked two weeks ahead. One transparent invoice.
- iv.
Celebrate
We arrive, set up, serve, and clean. You enjoy your evening — that's the whole point.
From the Field
Recent gatherings, in pictures.
Kind Words
From hosts, planners, and the occasional food editor.
"
Alessandro turned our garden into a Sicilian piazza. Three weeks later, guests are still asking for the burrata recipe.
Wedding · 140 guests
"
The arancini bar was the most photographed part of our launch. Effortless, generous, deeply Italian — exactly what we needed.
Events Lead, Atrium Studio Basel
"
Quietly the best Italian catering in the Dreiländereck. The pistachio arancino alone is worth the booking.
Editorial · Spring 2025
Common Questions
Before you book.
Don't see your question? Send us a note at hello@osa-catering.ch — we read every message and respond within 24 hours.
What's your minimum booking?
Our minimum is CHF 1,800 for catering events of 20 guests or more. Smaller intimate dinners can be arranged on a case-by-case basis — just ask.
How far in advance should I book?
For weddings and large events, 3–6 months. For cocktail hours and smaller gatherings, two to four weeks is usually plenty. We do hold space for last-minute requests when we can.
Do you accommodate dietary restrictions?
Always. Gluten-free, vegan, dairy-free, kosher, and allergen-aware menus are part of our standard practice. We'll work with you and your guests to make sure everyone is fed and happy.
What areas do you serve?
We're based in Rheinfelden and cater across Basel-Stadt, Basel-Landschaft, Aargau, and the wider Dreiländereck — including Lörrach and Saint-Louis. Travel fees apply outside the Basel region.
Do you provide staff and rentals?
Yes — chefs, servers, bartenders, and front-of-house. Rentals (tables, linens, glassware, florals) are sourced through our trusted partners and bundled into one transparent invoice.
Can we do a tasting first?
Absolutely. Tastings are held at our Rheinfelden kitchen for events over 60 guests, complimentary upon contract signing. For smaller events, we can arrange a tasting for a flat fee.
Plan Your Event
Tell us about
Tell us about
your evening.
Three minutes, four questions. We'll write back within a day with a tailored proposal.
- A real human reads every inquiry.
- No automated quotes — every event is unique.
- Tastings available at our Rheinfelden kitchen.
- Full transparency on pricing, sourcing, staffing.