Mix flour, sugar, and salt together
Reserve 3/4 cup of mixture
Cut margarine into remaining mixture until crumbly
Mix rich milk with the reserved dry mixture
Add to the dry crumbly mixture, tossing with a fork until it is moist
Shape into a ball
Roll out into a 1/4 inch thick triangle.
Use a pizza cutter to cut into 1 1/4 x 6 inch strips
Prick each stick with a fork, spacing pricks evenly at 1 or 1 1/2 inches apart
Place on ungreased baking sheet
Bake at 425 until just beginning to brown on the bottom (approximately 15 minutes)
Each pricked section is one serving.