A nut milk extraction bag having two parallel inner compartments. The body of the bag is made from two opposable, polymer, fluid impermeable side sheets having a polymer mesh central sheet continuously affixed across the axial width and near the proximal end of one of the side sheets and continually joined across the axial width near the distal end of the other side sheet. The body of the mesh sheet is free to move between the side sheets. The side edges of all three sheets are continually joined and the distal end of the two side sheets are also continually joined. Across the proximal edge of two side sheets is a reuseable seal. The bag is divided into two volume adjustable inner compartments about its longitudinal axis. A sealable, pourable spout is affixed at the distal end of the bag.