Combine flour, coffee, soda, baking powder and salt.
Thoroughly cream shortening, butter and sugars.
Add egg and rum extract; beat thoroughly.
Stir in dry ingredients; blend.
Shape into rolls 2 inches in diameter; wrap in waxed paper and chill several hours or overnight.
Slice thin and place on ungreased cookie sheets.
Center each cookie with a pecan.
Bake at 400 ° for 8 to 10 minutes.