BTW
Whatever ratio of gin to vermouth you use. Put them in the shaker and let them sit for a time so they get cold. Condensation on the shaker is about the right length of time. Put ice in your glass so it gets cold. Shake the S.H.I.T. out of the shaker, enough to splinter the ice and then pour the contents into your emptied, cold glass. Hold the glass up to the setting sun so that the ice splinters are melted by the sunlight, thereby capturing the sunlight in the glass. Drink before the temperature of the martini gets too warm and the sunlight escapes. This ritual is optional for subsequent martinis, in case of emergencies and in Arizona. YMMV.