Join a special “buffet” for a science popularization fest. Formats for science popularisation programmes are exploding today all around the word: science festivals, picnic, days, weeks, happenings, etc. Promoted by science centres, science events organizations or national agencies, all of them are well-embedded in the local context with the involvement of cities, governments and universities. Formats are very innovative, mixing art performances, talks, shows and use social networks and advertising tools to massively engage people. What’s the secret of a successful recipe? What is the impact of science popularisation events? The session will discuss the ingredients needed for a successful event by comparing approaches and formats from a panel of speakers with different origins and experiences.