To Buy: 
Available from health food shops and some supermarkets. It is more expensive than cow's yoghurt.  
To Store: 
Store in the refrigerator for up to three weeks. 
Tips & Tricks: 
To prevent yoghurt from separating when heated, stir it through the dish at the last minute or stabilise it first. To stabilise yoghurt heat it in a pan with 1 egg white and 1 teaspoon of seasalt. Stir uncovered (in one direction only) for 10 minutes. 
Source: Stephanie Alexander: The Cook's Companion.   
Cooking Tips: 
Sheep's yoghurt is particularly good in tzatziki salad and desserts when you want a smooth, creamy consistency. 
Serve over poached pears with a drizzle of warmed honey, cinnamon and roasted walnuts.