U Sauce Tartare

U Sauce Tartare is a private-label condiment sold by the French retail cooperative Système U. As a typical white sauce based on mayonnaise with herbs and pickles, it is commonly paired with seafood.

Système U products are primarily manufactured within France to support local supply chains and ensure quality standards. The brand represents a federation of independent retailers who operate under the 'U' banners (Hyper U, Super U, etc.). Ownership remains within the cooperative structure of French independent merchants.