For two drinks:
5 oz gin
1.5 oz campari
1 tsp dry vermouth
1 pluout plum
Chill 2 martini glasses
Add ice to shaker.
Reserve 6 slices plum, 2 tangerine wedges
Chop remaining plum, add to shaker with Campari
Squeeze remsining tangerine, add juice and squeezed tangerine pieces to shaker
Muddle contents with wooden spoon
Add 3 oz gin to shaker, shake.
Pour vermouth into one glass, swirl and pour out into second glass. Swirl and pour our remainder.
Pour shaken liquid into glasses, add reserved fruit and top off with 1 oz gin each.