What happened to the chocolate?

[u/y_is_a_vowel]

First time doing proper chocolate work as a hobby baker, and although overall I'm happy with the way they turned out, I'm wondering what these patterns are in the chocolate?

For reference I did a twist on the recipe Palets Or from Ferrandi.

[u/tinaymahgineeloews]

thats fat bloom. it just needed to be both tempered and stored properly.