Ristoris Onion Sauce: the ready-to-use sweet-and-sour classic for the professional kitchen
Ristoris Onion Sauce in a 540 g glass jar is a gastronomic preparation made from 79% onions, slow-cooked with wine vinegar, Marsala wine, corn starch and salt. The result is a creamy, spreadable sauce with tender onion pieces and a balanced sweet-and-sour profile: ready to plate, with no prep time and no cold chain required before opening. Each carton contains 6 jars, the standard food service format.
What it is
Onion sauce belongs to the Italian tradition of vegetable preserves in glass: onions are slowly cooked until soft, then balanced with wine vinegar for acidity and Marsala wine for roundness and aromatic depth. Corn starch binds the preparation into a stable, creamy texture that holds well on the plate and in the fridge after opening.
The producer: Ristoris
Ristoris is an Italian company based in Codogno (Lodi), Lombardy, specialised in the production and selection of preserves for the food service channel: vegetables, sauces, mushrooms, truffles and regional specialities. Production follows ISO, BRC and IFS certification standards, with full traceability from raw material to finished jar.
Sensory profile
Amber-coloured sauce with visible onion pieces, creamy and compact consistency. On the palate the natural sweetness of slow-cooked onions meets the acidity of wine vinegar, while the Marsala adds a warm, slightly caramelised aromatic note. Contains sulphites.
Technical specifications
Net weight 540 g per glass jar, 6 jars per carton. Average nutritional values per 100 g: fat 5.0 g (of which saturates 0.8 g), carbohydrates 8.8 g (of which sugars 6.6 g), protein 1.0 g, salt 1.5 g. Store in a cool, dry place; after opening keep refrigerated, covered with a thin layer of oil, and use within a short time.
Professional uses
Gourmet burgers: 30-40 g per burger as a base or topping in place of fresh caramelised onions, with zero cooking time. Cheese boards: ideal companion for aged cheeses, where the sweet-and-sour contrast enhances long-matured pastes. Charcuterie and bruschetta: spread on toasted bread with cured meats or anchovies. Grilled meats: served on the side like a chutney. Sandwiches and panini: a thin layer adds character without moisture excess.
Common mistakes to avoid
Do not heat the sauce at high temperature: it is already cooked and only needs to be brought to room temperature for full aroma. Do not leave the open jar uncovered in the fridge: cover the surface with a thin layer of oil to preserve it. Do not overdose: 30-40 g per portion is the professional standard, more would overpower delicate cheeses.
Delivery and logistics
B2B and B2C delivery throughout Switzerland from the LAPA warehouse in Embrach (Zurich). Direct distribution with the LAPA fleet across Zurich, Winterthur, Uster, Aargau, St. Gallen, Schaffhausen, Lucerne, Bern and Basel. For Ticino (Lugano, Bellinzona, Locarno), French-speaking Switzerland (Geneva, Lausanne, Fribourg) and Graubuenden (Chur, Davos) shipping within 24-48 hours via partner couriers such as Swiss Post, Planzer and Galliker. Ambient product: no cold chain needed, perfect for stock orders.
Who it is for
Restaurants, gourmet burger bars, pizzerias, delicatessens, hotels, catering services, Italian grocery stores and private customers who want a ready-to-use artisan-style onion sauce with consistent quality all year round.
