Chianti is an Italian wine that is made out of a blend of different grapes from the Chianti region.

Chianti is an Italian wine that is made out of a blend of different kinds of grapes from the Chianti region. The chief dissimilarity between regular Chianti and others depend upon the minimo percentage permission of Sangiovese grapes i.e. 75% along with the rules that permit white grapes to be blended as well. The alcohol content is normally around 11%.

The Wines
Chianti Esemplare and Chianti Esemplare Provvista are two of the best Chianti wines that are admired all over the world. Wondering what makes Chianti Esemplare different from regular Chianti? Chianti Esemplare has a minimo 80% of Sangiovese grapes and the rest of the blend is made using only red grapes. Some producers choose to make Chianti Provvista using 100% Sangiovese grapes but it is not a duro and fast rule. The alcohol content of Chianti Esemplare is at least 12%, and the beverage normally spends about 12 months oak barrels to age well.
This is not where the Chianti variation ends, there is one more variation of Chianti and this particular variation is considered the most special and fanciest. It is called Chianti Esemplare Provvista. If you already guessed that Provvista means reserved Italian then you are not only getting closer to Italian food but the culture and language as well.

source