Where does “шекер” come from?

шекер (Kazakh) comes from Classical Persian شکر, from Middle Persian 𐭱𐭪𐭥, from Sanskrit शर्करा, from Proto-Indo-Aryan śárkaraH, from Proto-Indo-Iranian ćárkaraH, from Proto-Indo-European ḱorkeh₂ — gravel, boulder; boulder; gravel.

шекер (Kazakh): sugar

Definitions

sugar

Ancestry of “шекер”, step by step

Step	Language	Word	Meaning
1	Classical Persian	شکر	—
2	Middle Persian	𐭱𐭪𐭥	—
3	Sanskrit	शर्करा	gravel, grit, pebbles, shingle, gravelly mould or...
4	Proto-Indo-Aryan	śárkaraH	—
5	Proto-Indo-Iranian	ćárkaraH	—
6	Proto-Indo-European	ḱorkeh₂	gravel, boulder; boulder; gravel

Every word from Proto-Indo-European ḱorkeh₂ →Every word from Proto-Indo-Iranian ćárkaraH →Every word from Proto-Indo-Aryan śárkaraH →