The invention relates to a fountain for viscous or pasty food product based on sugar such as jam or marmalade. According to the invention, this fountain comprises - a tank (11) having a wall, and an inner tank (12) placed in said tank (11), said wall surrounding said inner tank (12) delimiting with the outer surface of said inner tank (12), an intermediate volume (14), said inner tank (12) being intended to contain said food product, - said intermediate volume (14) being intended to receive a liquid for bathing at least in part, the external surface of said inner tank (12), - heating means (15) for heating said liquid intended to be contained in said intermediate volume (14), said liquid thus heated for heating the contents of said inner tank (12) by bathing -marie, - the lower portion of said reservoir (11) having an outlet in fluid communication with the single interior volume of said inner vessel (12), and - said fountain being configured so that the the temperature of the food product in the inner tank (12), when the fountain is in operation, is below 40 ° C, and even better at 35 ° C to limit the Maillard reaction in said food product. L'invention concerne une fontaine pour produit alimentaire visqueux ou pâteux à base de sucre tel que de la confiture ou de la marmelade. Selon l'invention, cette fontaine comprend - un réservoir (11) comportant une paroi, et une cuve (12) intérieure placée dans ledit réservoir (11), ladite paroi entourant ladite cuve (12) intérieure en délimitant avec la surface externe de ladite cuve (12) intérieure, un volume (14) intercalaire, ladite cuve (12) intérieure étant destinée à contenir ledit produit alimentaire, - ledit volume (14) intercalaire étant destiné à recevoir un liquide pour baigner au moins en partie, la surface externe de ladite cuve (12) intérieure, - un moyen (15) de chauffage pour chauffer ledit liquide destiné à être contenu dans ledit volume (14) intercalaire, ledit liqu
