Slicing egg on Shabbat

Hi,

The prohibition against grinding food on Shabbat applies to cutting food into tiny pieces, but not to cutting food into thin slices. Thus, one may slice egg or vegetables into thin slivers on Shabbat.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 4:74:Tochein 3)

Have a great day,
Mordechai