Constantia. Steenberg vineyards are renowned for their cooler climate white Bordeaux wines, including Sauvignon Blanc and Semillon. This wine is an iconic blend of the two, and is recognised as one of the leading white wines in South Africa. The Magna Carta offers attractive aromas of tropical fruit with hints of dried apricot and wafts of fresh orange zest. The rich and creamy palate is layered with tangy fruit supported by fragrant, yet delicate balance of oak on the extended mineraly finish.