Method for gasifying biomass comprising the following steps of: a) bringing, in a main reactor, beads heated to a temperature between 600°C and 1,000°C, and preferably between 900°C and 1,000°C, into contact with a feedstock mixture comprising water and a biomass, the biomass comprising an organic part and salts, the beads being made of a material that is selected from steel, a metal alloy, glass or a ceramic, and preferably having a diameter of between 500 μm and 2 mm, in step a), the main reactor being pressurised to more than 222 bar, for example to more than 250 bar, and preferably heated to a temperature above 200°C and below 374°C, for example to a temperature between 200°C and 300°C, b) at least partially gasifying the organic matter, in the presence of the beads at a temperature above 374°C and at a pressure above 222 bar, preferably at a temperature between 400°C and 500°C and at a pressure above 250 bar, thereby forming a gaseous phase, an aqueous phase and a solid residue, and whereby the salts precipitate on the beads, forming a salt shell covering the beads, the method further comprising the following steps of: c) separating the beads covered by the salt shell from the organic part, d) regenerating the beads, for example, by the following sub-steps: d1) removing the salt shell of the beads, for example by washing the beads with an aqueous solution at a temperature below 374°C, whereby the salts are dissolved, d2) heating the beads to a temperature between 600°C and 1,000°C and preferably between 900°C and 1,000°C, step d2) preferably being carried out by combustion in the presence of dioxygen. a) bringing, in a main reactor, beads heated to a temperature between 600°C and 1,000°C, and preferably between 900°C and 1,000°C, into contact with a feedstock mixture comprising water and a biomass, the biomass comprising an organic part and salts, the beads being made of a material that is selected from steel, a metal alloy, glass or a ceramic, and preferably having a diameter of between 500 μm and 2 mm, in step a), the main reactor being pressurised to more than 222 bar, for example to more than 250 bar, and preferably heated to a temperature above 200°C and below 374°C, for example to a temperature between 200°C and 300°C, the beads being made of a material that is selected from steel, a metal alloy, glass or a ceramic, and preferably having a diameter of between 500 μm and 2 mm, in step a), the main reactor being pressurised to more than 222 bar, for example to more than 250 bar, and preferably heated to a temperature above 200°C and below 374°C, for example to a temperature between 200°C and 300°C, b) at least partially gasifying the organic matter, in the presence of the beads at a temperature above 374°C and at a pressure above 222 bar, preferably at a temperature between 400°C and 500°C and at a pressure above 250 bar, thereby forming a gaseous phase, an aqueous phase and a solid residue, and whereby the salts precipitate on the beads, forming a salt shell covering the beads, c) separating the beads covered by the salt shell from the organic part, d) regenerating the beads, for example, by the following sub-steps: d1) removing the salt shell of the beads, for example by washing the beads with an aqueous solution at a temperature below 374°C, whereby the salts are dissolved, d2) heating the beads to a temperature between 600°C and 1,000°C and preferably between 900°C and 1,000°C, step d2) preferably being carried out by combustion in the presence of dioxygen. d1) removing the salt shell of the beads, for example by washing the beads with an aqueous solution at a temperature below 374°C, whereby the salts are dissolved, d2) heating the beads to a temperature between 600°C and 1,000°C and preferably between 900°C and 1,000°C, step d2) preferably being carried out by combustion in the presence of dioxygen.