Pão de Queijo

1 cup milk
1 cup vegetable oil
3 large eggs
3 cups sweet tapioca flour (polvilho doce)
100 g grated cheese

Look for 'polvilho doce' in Latin American markets or the international aisle of well-stocked supermarkets. It's a fine, white powder derived from cassava. If unavailable, tapioca starch (not flour) might be a distant substitute, but it will alter the texture.
A semi-hard to hard cheese with a salty flavor is traditional. Parmesan cheese is a common and accessible substitute in many countries. Look for 'Queijo Minas Meia Cura' or similar Brazilian cheeses in Latin American specialty stores for a more authentic flavor. In the US, a mix of Parmesan and a mild cheddar or Monterey Jack can also work.

Pão de Queijo is a traditional Brazilian cheese bread, made with milk, highly appreciated for its flavor and ease of preparation.