Renzo Cotarella, managing director of Marchesi Antinori tells me that the 2018 vintage showed very different results in the inland and hilly Chianti Classico appellation compared to the flat, sea-facing Bolgheri appellation. This season saw some rain right before harvest. That extra humidity rolled right off the Chianti Classico hills and disappeared without effect, but it stuck around longer in the thicker, flatter soils of Guado al Tasso. For this reason, one of the estate's top wines, the Cabernet Franc-based Matarocchio, was not produced in 2018 for fear that the fruit would not offer the concentration required of a wine of that important stature. The best of that fruit was used in this wine instead. For that reason, the 2018 Bolgheri Superiore Guado al Tasso sees a little more Cabernet Franc (clocking in at about 22% of the blend) and less Merlot, with the rest being Cabernet Sauvignon, of course, (at about 60%).