pan = bread (in both Spanish & Japanese)
de = of
leche = milk
Milk bread, basically. Milky bread? Milk's bread? lol Any of those would make sense. Anyway, they sell these, Pan de Sal, and some other breads that look delicious (some made of ube, or taro) at R-N Market (this Asian grocery store that stinks like Asian nastiness but has some good stuff...and some good non-Asian and Asian bread), apparently.