Activate the yeast In a small bowl, mix the lukewarm water, yeast, and sugar. 

Let stand for 3 minutes, until slightly foamy. 

Mix wet ingredients Pour the yeast mixture into a large bowl. 

Add lard (or oil), salt, and milk. Stir to combine. 

Add flour Add flour 1 cup at a time, mixing well after each addition, until a soft dough forms. 

First rise Cover the dough and let rise in a warm place until doubled in size (about 45–60 minutes). 

Knead and rest Punch down and knead briefly. Cover and let rise again for 20 minutes. 

Shape buns Divide dough and shape into round buns. Place on greased or parchment-lined baking sheets. 

Second rise: Cover and let buns rise for 20–30 minutes, until puffy. 

Bake Bake at 350°F (175°C) for 15–20 minutes, until just lightly golden on top (do not over-brown). 

Cool Remove from oven and cool on a rack. Brush with butter if desired.