The AOC decree authorizes a certain number of varieties of vine :

WHITE WINES :
Rolle : typically of Nice, this vine is the main ingredient in Bellet white wines (80 to 90 %).
Chardonnays

RED AND ROSES WINES
The main vines :
La Folle Noire (so called for its very unpredictable harvest from year to year)
Le Braquet (also the name of an old local family)
Secondary wines (two Mediterranean varieties) :
Le Grenache
Le Cinsault