01 -
Combine the goat cheese and blackberry jam in a small bowl. Stir until streaky and marbled, not completely smooth.
02 -
Unfold the puff pastry on a lightly floured surface. Roll gently to smooth the seams. Spread the filling evenly, leaving a 1/2-inch bare border along one long edge.
03 -
Fold the pastry in half lengthwise over the filling. Press gently to seal the bare edge. Slice crosswise into 1/2-inch strips with a sharp knife or pizza wheel.
04 -
Hold each strip by both ends and twist two to three times. Place on a parchment-lined baking sheet, spacing them 1 inch apart.
05 -
Beat the egg with water and brush over the twists. Sprinkle with coarse sugar. Bake at 375°F (190°C) for 18 to 22 minutes, until puffed and deep golden brown.
06 -
Let rest on the pan for 5 minutes, then transfer to a wire rack or serving platter.