Rising_Sun
Seeking thinner peace
Plus, what's tetrapack? I'm on LT though?
That should have read tetra brics and yes they are ready made shakes from CD. Quite lovely flavours too.
Seeing as you are on LL, how about buying one of those Maximuscle shake /drinking bottles. I've seen them in Boots and they mix a shake quite well. There's a mesh inner lid that helps the mixing. Or, if you "cook" any of your packs, then you could make crisps for lunch. Hope this helps.