Sour milkshake

<p>Totally disgusted with the milkshake!! I bought chocolate milkshake yesterday, 3 December and took it to a family outing today and when I opened it (luckily I always taste them) was sour and had to deal with an unhappy toddler because he can't get a milkshake and we were nowhere near a shop. Expire date 16 February 2017. We use all purity products and this is the first time we are let down</p>