Step 1

Preheat the oven to 400°. In a medium skillet, heat the olive oil. Add the sausage, and cook over moderately

Step 2

In a medium saucepan, combine the water, milk, vegetable oil and salt and bring to a simmer. Remove from the heat.

Step 3

Place the sour tapioca flour in a large bowl and briskly mix in the hot milk mixture with a wooden spoon until the flour is completely incorporated and a sticky dough forms. When the dough is cool enough to handle, knead it until smooth and just slightly warm.

Step 4

Add the eggs one at a time, kneading and then mixing with the wooden spoon until incorporated. Stir in the grated cheese and cooled sausage in two additions.

Step 5

Using an ice cream scoop and greased hands, shape the dough into 2-tablespoon size balls and arrange them on 2 parchment paper-lined baking sheets. Bake until puffed and golden, about 20 minutes. Let cool on the sheets for a few minutes before serving.