In the work described here, emphasis is put on recent results obtained in high pressure methanol droplet vaporization and burning experiments conducted both under normal gravity and during the parabolic flights of the CNES Caravelle. The combination of high ambient pressure droplet burning experiments with reduced gravity is crucial in order to reduce the pressure enhanced natural convection effects and also to extend the applicability of the fibre suspended droplet technique when the surface tension decreases due to the closeness of thermodynamic critical conditions. Low temperature vaporization experiments are conducted in dry air up to 10 Mpa, but only under normal gravity conditions because of the longer gasification times. Droplet burning experiments are conducted up to 8 MPa under normal gravity and up to 5 MPa under reduced gravity. The pressure dependencies of the gasification rates for each regime are discussed.