A method of treatment or prevention of overweight or obesity, comprising oral administration of an edible foam product containing at least 60% wt. % of water, 1-7 wt. % of protein, from 1 to 20 wt. % of carbohydrates, from 0.1 to 3.0 wt. % of fat, and from 0.5 to 2 wt. % of cocoa particles with a volume weighted mean diameter between 0.2 and 2 μm and being characterised by a pourable or spoonable consistency, an overrun of at least 100%, a high in-mouth stability shown by a reduction in overrun of less than 25% under in-mouth shear conditions, and a high gastric stability as evidenced by t1/2 exceeding 60 minutes t1/2 representing the time needed to achieve a reduction in overrun of 50% under gastric conditions.