Our objective then is to determine whether consumer panels are truly representative of the market place for soluble coffee. To explain this low coverage, we looked closely to: 1) The kind of consumers sales that the panel was providing us. The kind of consumers sales : only household consumption at home is provided. 2) The kind of product we wanted consumers sales for : Soluble Coffee. The convenient character of soluble coffee is irrefutable, so we can imagine a higher usage when convenience is required : Vacation; Working place; Week; and when living alone.