So it is not a mentos?
No
A drop of milk?
No
there is a reflexion, a guy with a lightblue shirt? ahhh that s why blurry… 
and it is maybe an eyelens / contact lens from inside out photographed??? or. the peephole at a door?
or the metal button on a jacket 
No, none of those.
Clue: It’s quite small, hence the blur, I’ve had to zoom a lot.
button? 
A LED?
head of a pin?
well… that was… yes…
That looks like food.
Kfc?
Some kind of cake?
cornflakes… crunchy nut?
Nope and no
Is it a cookie?
No but oh-so-tasty