Can you freeze yogurt? It was on sale, and I am going to use it to make smoothies.
Yes, yoghurt can be frozen - according to this Canadian government agency, freezing it extends its shelf life to 1-2 months past its sell by date. Note that they do not recommend freezing an opened container of yoghurt. However, considering that it keeps for quite a while in the refridgerator as well you may not need to. This answer point out a couple of issues with freezing yoghurt, namely that it can get separated - if you put it in a blender that may not be a huge issue, as you kinda mix it together again anyway.
I live in UK and am used to frozen yoghurt as a dessert. To work it needs some sugar and churning.
This article might help.
Here's the recipe..
makes one litre
1l whole-milk plain yoghurt, chilled 100g unrefined caster sugar 100g white caster sugar 1/4 tsp fine salt 1 lemon (optional)