Ganache is optional on cheesecakes. Many varieties of cheesecake are possible with many different fruit toppings and garnishes, of which ganache is only one.
Sure. If you use a chocolate ganache, I recommend serving it with fresh raspberries.
Ganache can be used to ice desserts, whipped into a frosting, or chilled and used as a truffle filling.
Ganache is chocolate and cream. White chocolate ganache will be made by melting white chocolate and then adding cream. This is likely to be a lot sweeter than average ganache (dark chocolate) as white chocolate is sweeter in general and contains less cocoa solids.
Gateau is French for cake.
TRUFFLE
It is a cream chocolate sauce used for decorating cakes.
Whipping Cream And Melted Chocolate
A thickening is a substance used to thicken foods such as sauces, gravies soups and stews. This can be a roux made of oil and flour, cornstarch, etc. Instant potato flakes can be used to thicken some foods. There are several ways to thicken foods.
Yes, in fact hazelnut ganache is a very healthy substitute for praline due to the natural anti-oxidants and fatty-acids (the good kind).
There are many resources one may use to find ganache recipes. One can use the Internet to search them out; perhaps they may purchase a cookbook online or at a bookstore.
The verb of thick is thicken. As in "to thicken something".