Italy's fifth largest region has a warm Mediterranean climate with many hills. Reigning supreme is the Sangiovese grape, which makes Chianti. The sunny slopes and significant temperature range between day and night are important for developing Sangiovese’s characteristic sour red cherry aroma with earthy and tea leaf notes. This varietal can be over vigorous so painstaking winemakers restrict production to 1.5 kg of grapes per vine. The introduction of international grape varieties, which fall outside of the Italian classification system, led to the term Super Tuscan for their fabulous wines.