II
The Method
1
Sweat the onion and garlic in the oil over medium heat until softened and translucent. Add the shredded chicken, season with salt, and stir to combine. Remove from the heat. Fold in the catupiry until the mixture is evenly bound, creamy, and cohesive. The filling must hold together when pressed — loose or wet filling will burst the casing.
2
Bring the chicken stock to a full boil in a wide, heavy saucepan. Add the salt. Tip in all the flour at once and stir vigorously with a wooden spoon over medium heat until the mixture pulls away from the sides and forms a smooth, cohesive mass with no dry pockets. This is where the dish lives or dies: the dough must be fully cooked — it must leave the pan sides cleanly and feel neither wet nor crumbly, but dense and uniform. Remove from the heat.
3
Turn the dough onto a clean surface and allow it to cool until it can be handled without sticking — warm, not hot. If it sticks, it is too hot; if it begins to crack at the edges when pressed, it has cooled too far. Work quickly once it reaches a smooth, pliable consistency.
4
Pinch off a portion of dough (approximately 60 g) and flatten it in the palm into a round disc. Place a heaped teaspoon of filling at the centre — do not overfill. Draw the edges of the dough up and around the filling, pinching them together firmly at the top to seal. Shape the top into a point, forming the characteristic teardrop resembling a chicken drumstick. The surface must be smooth and sealed with no cracks or seams showing.
5
Set up three shallow dishes: flour, egg wash, and breadcrumbs. Roll each shaped coxinha in flour, then coat thoroughly in egg wash, then press into breadcrumbs to form an even, complete layer. Repeat the egg wash and breadcrumb stages to achieve a double coating. No bare patches should be visible. Arrange on a tray and refrigerate for 30 minutes — the surface should feel firm and dry to the touch.
6
Heat the frying oil to 180 °C. Remove the coxinhas from the refrigerator and allow them to come to room temperature before frying — do not fry cold from the refrigerator. Lower the coxinhas into the oil in batches, without crowding, and fry until the exterior is a deep, even golden brown and the surface is crisp. Drain on a rack. Serve immediately while the casing cracks audibly on first bite.