As robotic technology reshapes dining experiences, few studies have explored the efficacy of service robots in traditional restaurants where consumption rituals are deeply embedded. Drawing on sense-making theory, this research aims to critically examine how service provider type (human vs. robot) interacts with consumption rituals (present vs. absent) to shape brand trust in traditional restaurants. Through three controlled experiments, the findings reveal a matching effect that human servers enhance brand trust when consumption rituals are present, whereas robot servers are more effective in non-ritualistic settings. These effects are mediated by distinct authenticity perceptions: human servers strengthen moral authenticity, while robot servers enhance food authenticity. By uncovering the nuanced sense-making process underlying human-robot interactions, this research advances knowledge by identifying authenticity as a dual-pathway mechanism in ritualistic dining contexts. Practically, this research provides insights into optimizing service automation in traditional restaurants, balancing technological innovation with cultural preservation to enhance brand trust.