Shot for my Canonrumors.com review on the Canon 40mm ƒ/2.8 "pancake" lens, you can read it here: www.canonrumors.com/reviews/review-canon-ef-40-f2-8-stm/
Strobist info: Elinchrom BXRI 500 through a large Beauty dish on-axis above the camera angled towards the background. I used a Lumopro LP160 (flagged from the lens) at 1/4 power to blow out the white background which also created a soft spill from behind. I added a white board at camera left for fill and a bit of a highlight on the liquid.
Update: There's a "how to" tutorial for my shot over on Petapixel.