Preheat oven to 375°F.
In a bowl, beat the egg yolk with 1/2 tsp of water.
Cut the sausages in half.
Cut the puff pastry into 1/2-inch strips. Cross them to make an "x" and wrap them around the sausages
Place prepared sausages on a baking sheet and brush with the beaten egg yolk.
Bake until golden, 15 to 25 minutes. Remove from oven, push a stick into each sausage, and serve warm with mango chutney- red onion relish for dipping.
Mix chutney, onion, cilantro, and 1 tablespoon mustard.
Cover and chill-Can be made 1 day ahead.