Masa-Dough: In a large bowl, mix the corn masa harina, salt and baking powder until well distributed. Remove the fat from the fridge and measure out. You will not have enough, use store bought to make up for the rest needed. In a separate large bowl,
whisk the duck fat until smooth, and creamy. About 2 minutes. Mix the oil gradually, as you stir continuously. Once fully incorporated, mix in half of the masa mixture. Then, incorporate the other half. By the end it should resemble the texture of wet sand. Knead in the one cup of red sauce reserved. Now, gradually knead in 3 3/4
cups of the warm broth (could take more or less broth.) Knead in between additions. When the dough forms a mass, feels very soft, and is fully moistened, knead for 5 minutes. The characteristics we are looking for in our masa dough are: softness, keeps its shape, hydrated, and spreadable. Cover with a kitchen towel to prevent it from drying out.