Bordeaux - red

Red Bordeaux is in nearly all cases a blend of grapes.
In almost all Bordeaux a part of Merlot is processed.
An example of an expensive wine made of just Merlot (the so called mono-cépage, and by that very special) is Chateaux Petrus from Pomerol, one of the most expensive wines in the world.

On the right bank of the Gironde (St. Emillion, pomerol and surroundings) the Merlot and Cabernet Franc are dominant.
On the left bank (Medoc and surroundings) the Cabernet Sauvignon is dominant.
Because the Cabernet Sauvignon is a must “severe” grape with higher acidity and tannins, its often in his youth a more harsher wine.
Fine Medoc-wines thus should not be drunk too early.

The grapes which are allowed to be used in red Bordeaux are:
Merlot
Cabernet Sauvignon
Malbec
Carmenère
Petit Verdot