Nine out of ten geologists recommend this cabernet.* If you ask them why, prepare for a TED talk on the magic of limonite, hematite, magnetite; siderite; chamosite, and other obscure minerals found in the ironstone that helps these vines drain, and briefly make the lining of your cheek feel dry as a riverbed. But with all the sandalwood, blackcurrant, leafiness and fruit flesh, they might have to fight the arborists for it.