I made a recipe of 'Grand Marnier Prawns' last night. The instructions called for "burning off' the alcohol of 1 cup of Grand Marnier. What I did was place the GM in a sauce pan and lit it on fire....and it burned...and it burned...and I became inpatient. The flames simmered down to bluish and put the lid on the pan to put it out. Was I too impatient? Should I have waited until the flames extinguished themselves? Thanks in advance for your answers!