Abstract: The invention relates to a frozen pre-fried dough in ring form that is crispy on the outside and soft on the inside, characterised in that it comprises: a) liquid ingredients: 14.63-18.85% frozen yellow sweet potato pulp, 4.88-11.31% frozen winter squash (Cucurbita maxima Duch.) pulp, 0.49-075% frozen grated cassava, 0.49-075% frozen banana (platano de la is/a) cut into round slices; b) dry ingredients: 3.58-4.14% sugar, 0.005-0.019% sweetener, 1.31-1.46% fresh yeast, 0.49-0.75% vanilla essence, 0.049-0.075% seeds, 0.24-0.38% aniseed and 9.42-9.75% vegetable oil; c) between 32.0-39.0% wheat pastry flour; and e) between 20.74-24.38% water.