It's soy milk. Vanilla Silk to be exact. I love it because it makes my coffee absolutely perfect and it makes my morning cereal extra delicious. I will never go back to cow's milk.
Bonus: One cup of Silk only has 7g sugar whereas skim cow's milk has 13g of sugar...that's almost twice the amount! For some reason the Silk tastes creamier and sweeter than the cow's milk even though it has less sugar. When I put silk in my coffee I use a generous amount. I fill my coffee cup up almost half way with silk and microwave it. Then I add the other half with brewed coffee. Soooooo good! It doesn't even need any sugar or any kind of sweetener. I normally drink my coffee black but sometimes I crave a nice cup of creamy, sweet coffee and this vanilla silk definitely does the trick. Love is a strong word but yes, I love it. :)
Silk: 1 Cup = only 1.5 g fat, only 80 calories, 7g sugar, 6 g protein.
Compared to Skim Cow's Milk it has:
more vitiman C
more Iron (Cow's milk= 0% Iron Silk=10% Iron)
more fibre (Cow's milk= 0% fibre, Silk= 4% dietary fibre)
It's lactose free
10 less calories!
However, it does have a little more fat (but those are good fats), and a little less protein but nothing worth mentioning...and besides, with all of those extra vitamins and minerals that Silk has to offer, it's worth it.
This is my own personal opinion. I'm not trying to convert anyone over to Soy Milk, I'm just expressing my new found love for Vanilla Silk. :) Try it in your coffee, you'll love it.