The invention relates to a method for producing a viscous food preparation from a natural fruit and/or vegetable powder. The method comprises a step (E4) of adding a quantity of water to said natural fruit and/or vegetable powder in order to produce a natural viscous fruit and/or vegetable food preparation, a step (E5) of pasteurising the natural viscous fruit and/or vegetable food preparation thus produced, and a step (E6) of packaging the pasteurised viscous food preparation in a sealed food container.