I regularly drink about four type of cocktails
Gin and IT - 1 third Gin 2 thirds Red Vermouth or you can use Dubonnet - you can add ice but I prefer not to.
Margaritas for two - 100cl Silver Tequila, 60cl Triple Sec (not cointreau), 30cl fresh lemon juice, shake all the ingredients together with ice and pour into salt rimmed glasses.
Electric soup - 8 parts Plymouth Gin, 1 part Noilly Prat vermouth, couple of olives - shake over ice or better still chill all ingredients and the glasses, stir mix and pour.
Whisky Old fashioned - double measure whisky, two white sugar cubes, couple dashes of angustura bitters, half a small orange sliced fine.
Put the sugar cubes into a large whiskey glass and drop a few dashes of bitters onto them. Add the orange slices and the whisky, stir vigorously to dissolve the sugar. You can use ice I prefer not to.