INGREDIENTS
1 cup
all-purpose flour (plus extra for rolling out dough)
1/4 tsp
salt
6 oz
unsalted butter (1 1/2 sticks cut into 1/4 inch cubes kept cold)
1/2 cup
cold water
1 lb
pork sausage (casings removed)
1 tbsp
fresh sage (finely chopped)
1/4
small yellow onion (finely chopped)
1
large egg (beaten)