Messti de Brechlingen is kept because the Wasselonne municipal page validates a specific local festival on 21 August 2026 at Place Bel Air. The source describes a free popular ball under a marquee, music, refreshments, tartes flambees, pizzas, grilled food and a tombola. The event is not categorized as a market or gastronomy listing; the stronger cultural frame is the Alsatian Messti tradition as a village gathering with food, music and local association life.