Abstract: A method of manufacturing a liquid container of plastic coated boxboard, laminated cardboard or the like having a straw therein is disclosed. A method for attaching a holder/straw assembly to a carton in a continuous form, fill and seal process including the following steps: unrolling a rolled sheet material being comprised of a plurality of carton sections, each carton section having a hole formed therein; sealingly attaching the holder/straw assembly to the sheet material over said hole; attaching a strip to the holder/straw assembly; forming the sheet into a columnar sleeve; sealing a longitudinal seal along the columnar sleeve; adding the beverage into the sealed columnar sleeve; forming a top and bottom transverse seal across the columnar sleeve and through the beverage; cutting each carton from the columnar sleeve; and forming a parallelepipedic carton having a drinking straw therein.