This is the 8279th most frequent French word.
weiss
The word "weiss" is not French; it is German and means "white" in English.
In this sentence, 'blanc' is used to describe the type of chocolate, 'white chocolate', which corresponds to the French word 'weiss'.
Elle sait bien que je n'aime pas le chocolat blanc.
She knows well that I don't like white chocolate.
Here, 'blanc' refers to the color white, used to describe the snow-covered scenery, an appropriate translation for 'weiss'.
Nous avons admiré le paysage enneigé, tout était couvert de blanc.
We admired the snowy landscape, everything was covered in white.
In this context, 'blanc' specifies the white portion of the egg, which aligns with the German 'weiss' referring to egg whites.