what does it mean by " hair that smells like bread"?

Her mother's hair gives the scent and feel of comfort,

But my mother's hair, my mother's hair, like little rosettes, like little candy circles all curly and pretty because she pinned it in pincurls all day, sweet to put your nose into when she is holding you, holding you and you feel safe, is the warm smell of bread before you bake it, is the smell when she makes room for you on her side of the bed still warm with her skin, and you sleep near her, the rain outside falling and Papa snoring. (2.2)

What does it mean if her mother's hair smells like little rosettes ?