Shrimp Empanadas

Directions

1. 1
   ["Mix warm lard, salt, vinegar, and 2 cups lukewarm water in a large bowl to combine. Gradually add 6 cups flour, mixing with a sturdy wooden spoon or your hands until a shaggy dough forms.", "Transfer dough to a lightly floured surface and knead until mostly smooth and no dry spots remain, about 2 minutes. Wrap in plastic and chill at least 2 hours.", "Cut shrimp in half lengthwise, then finely chop (it's okay if some pieces get pasty). Set aside.", "Heat 2 Tbsp. olive oil in a large saucepan over medium-high. Add reserved shrimp shells and heads (if using) and cook, smashing down on shells and heads occasionally with a wooden spoon, until pink and bottom of pot begins to brown, about 5 minutes. Add wine and cook until reduced by half, about 2 minutes. Add 2/3 cup water; bring to a boil. Reduce heat to low and simmer until reduced by one-third, 6-8 minutes. Let cool. Strain stock through a fine-mesh sieve into a heatproof measuring glass, pressing on solids; discard solids.", "Wipe out pan, add remaining 2 Tbsp. olive oil, and set over medium heat. Cook onion, stirring often, until softened but without taking on any color, about 5 minutes. Add garlic and cook, stirring, until softened, about 3 minutes. Add shrimp stock and reserved shrimp and cook, stirring occasionally, until most of the shrimp have turned pink, about 2 minutes. Remove from heat. (Shrimp will continue cooking in the residual heat.) Mix in butter, cilantro, lemon zest, and red pepper flakes; season with salt. Let cool 20 minutes, then transfer to a medium bowl. Chill at least 1 hour before using.", "Divide dough into 6 equal pieces. Cover all but 1 piece with plastic wrap and chill. Roll out remaining piece of dough to a 14\" round about 1/16\"" thick.""