Place longanisa in pan and add 1 cup of water
Cover and simmer for 10 minutes in low heat
Discard remaining water and slightly brown longanisa in the same pan
Let stand to cool for 5 minutes
Cut each longanisa in half lengthwise
Unroll crescent roll dough and separate into 8 triangles
Lay each triangle on a flat surface
Place a piece of longanisa that has been cut in half on the wide end of the triangle
Roll each triangle ending on its pointed part
Place longanisa rolls on ungreased baking sheet
Prepare the egg wash by slightly beating the egg and 1 Tbsp.of cold water
Brush top of each roll with egg wash
Preheat oven to 375˚ and bake longanisa rolls until evenly and nicely brown (approximately 10 -12 minutes)