[thaumasiotes]

Technically, marzipan is just the almond paste. I associate it with things like terrible-tasting but structurally-sound cake decorations.

[cardinalfang]

To make marzipan structurally sound requires adding too much sugar, which spoils the taste.

[Fnoord]

It contains very little almond. Instead, it contains white beans as its cheap and a good emulsifier.

[quietbritishjim]

Marzipan is, by definition, mostly made from almonds. I'm sure knock-off marzipan-flavoured confections exist, but that doesn't change the meaning of the word.