A method for producing a short-chain polyether polyol comprising the steps of: (i) obtaining at least one oligomeric alkoxylated starter compound by reacting: (i.a) at least one low molecular weight starter compound comprising from 3 to 9 hydroxyl groups wherein said starter compound has a hydroxy equivalent weight of from 22 to 90 Da; (i.b) at least one alkylene oxide in the presence of; (i.c) a superacid catalyst present in a concentration of from 5 to 500 ppm relative to the amount of oligomeric alkoxylated starter compound to be produced; and (i.d) at a reaction temperature of from 60°C to 180°C; wherein the oligomeric alkoxylated starter compound has a HEW of from 60 to 200 Da; and (ii) converting the resulting alkoxylated starter compound into a short-chain polyether polyol without removal of the superacid catalyst by reacting: (ii.a) said oligomeric alkoxylated starter compound with; (ii.b) at least one alkylene oxide in the presence of; (ii.c) at least one double-metal cyanide catalyst, wherein the concentration of the DMC catalyst is from 10 to 10,000 ppm relative to the amount of short-chain polyether polyol to be produced; and (ii.d) at a reaction temperature of from 90°C to 180°C; wherein the resulting short-chain polyether polyol has a HEW of from 90 to 400 Da; and wherein the superacid is fluorinated sulfonic acid, a perfluoroalkylsulfonic acid, fluoroantimonic acid (HSbF 6), carborane superacid (HCHB 11 Cl 11), perchloric acid (HClO 4), tetrafluoroboric acid (HBF 4), hexafluorophosphoric acid (HPF 6), boron trifluoride (BF 3), antimony pentafluoride (SbF 5), phosphorous pentafluoride (PF 5), or mixtures thereof; or wherein the superacid is trifluoromethanesulfonic (triflic) acid (CF 3 SO 3 H), fluorosulfonic acid (HSO 3 F), fluoroantimonic acid, Magic acid (FSO 3 H-SbF 5), or mixtures thereof. (i) obtaining at least one oligomeric alkoxylated starter compound by reacting: (i.a) at least one low molecular weight starter compound comprising from 3 to 9 hydroxyl groups wherein said starter compound has a hydroxy equivalent weight of from 22 to 90 Da; (i.b) at least one alkylene oxide in the presence of; (i.c) a superacid catalyst present in a concentration of from 5 to 500 ppm relative to the amount of oligomeric alkoxylated starter compound to be produced; and (i.d) at a reaction temperature of from 60°C to 180°C; wherein the oligomeric alkoxylated starter compound has a HEW of from 60 to 200 Da; and (i.a) at least one low molecular weight starter compound comprising from 3 to 9 hydroxyl groups wherein said starter compound has a hydroxy equivalent weight of from 22 to 90 Da; (i.b) at least one alkylene oxide in the presence of; (i.c) a superacid catalyst present in a concentration of from 5 to 500 ppm relative to the amount of oligomeric alkoxylated starter compound to be produced; and (i.d) at a reaction temperature of from 60°C to 180°C; wherein the oligomeric alkoxylated starter compound has a HEW of from 60 to 200 Da; and (ii) converting the resulting alkoxylated starter compound into a short-chain polyether polyol without removal of the superacid catalyst by reacting: (ii.a) said oligomeric alkoxylated starter compound with; (ii.b) at least one alkylene oxide in the presence of; (ii.c) at least one double-metal cyanide catalyst, wherein the concentration of the DMC catalyst is from 10 to 10,000 ppm relative to the amount of short-chain polyether polyol to be produced; and (ii.d) at a reaction temperature of from 90°C to 180°C; wherein the resulting short-chain polyether polyol has a HEW of from 90 to 400 Da; and wherein the superacid is fluorinated sulfonic acid, a perfluoroalkylsulfonic acid, fluoroantimonic acid (HSbF 6), carborane superacid (HCHB 11 Cl 11), perchloric acid (HClO 4), tetrafluoroboric acid (HBF 4), hexafluorophosphoric acid (HPF 6), boron trifluoride (BF 3), antimony pentafluoride (SbF 5), phosphorous pentafluoride (PF 5), or mixtures thereof; or wherein the superacid is trifluoromethanesulfonic (triflic) acid (CF 3 SO 3 H), fluorosulfonic acid (HSO 3 F), fluoroantimonic acid, Magic acid (FSO 3 H-SbF 5), or mixtures thereof. (ii.a) said oligomeric alkoxylated starter compound with; (ii.b) at least one alkylene oxide in the presence of; (ii.c) at least one double-metal cyanide catalyst, wherein the concentration of the DMC catalyst is from 10 to 10,000 ppm relative to the amount of short-chain polyether polyol to be produced; and (ii.d) at a reaction temperature of from 90°C to 180°C; wherein the resulting short-chain polyether polyol has a HEW of from 90 to 400 Da; and wherein the superacid is fluorinated sulfonic acid, a perfluoroalkylsulfonic acid, fluoroantimonic acid (HSbF 6), carborane superacid (HCHB 11 Cl 11), perchloric acid (HClO 4), tetrafluoroboric acid (HBF 4), hexafluorophosphoric acid (HPF 6), boron trifluoride (BF 3), antimony pentafluoride (SbF 5), phosphorous pentafluoride (PF 5), or mixtures thereof; or wherein the superacid is trifluoromethanesulfonic (triflic) acid (CF 3 SO 3 H), fluorosulfonic acid (HSO 3 F), fluoroantimonic acid, Magic acid (FSO 3 H-SbF 5), or mixtures thereof.