Looks biased to me. Gotta test irl to compare.

Was it fresh when you started rendering?

Yea, but I guess a cockroach or two drowned in the milk in the meantime...
Can't avoid the bugs

Well, that didn't work.
Lowfat milk, regular milk, lowfat choc milk, regular choc milk.

Absorption is in balance with scattering.
If u lower the scattering then absorption color takes over.

Still the renders look interesting.

Drink your milk boys.

Looks delicious!

Nice !!

Great results, dag!
How long did you render, and in which mode?

Deliciously long...

Milk rendered to 20k spp in 131 hours and it's still a little noisy, and it doesn't seem to clear up anytime soon. Minimal absorption and high scattering is not a good combo.
Chocmilk 16k spp in 22 hours thanks to higher absorption.

Rendered with an i7 860 with MLT. Bidir is like drinking a gallon of syrup with that kinda scattering.

Amazing milk!
Can you share your materials please?

For SSS you probably want to use single directional PT with MLT on - as you say bidir really slows to a crawl when there are so many scattering events (as it tries to connect each such event to every other between the eye and light paths).

+1

Hmmm, quite interesting.. I thought BiDir does help here since it optimized the ray paths.

Is this BiDir thing a general SSS issue, or just tilt over on a certain point of SSS strength?

In general when you have highly scattering media, bidir will become quite slow.