I adapted this recipe from one I found in a book, which reliably informs me that this is in fact Sherbet, not Ice Cream. Did you care? I thought not!
Ingredients
200g sugar (you can use 20-30g of granulated sweetener instead, but it makes the ice cream a little grainy in texture)
4 pineapple rings from a can, plus 4-5 tbsp of the juice/syrup
2 large or 3 small egg whites
150ml double cream
Method
1 Place the sugar in a pan with 240ml water and heat gently until the sugar dissolves. Bring to the boil, then simmer for about 15 minutes to get a sugar syrup. Allow the syrup to cool for about 30 minutes.
2 Blend the pineapple rings and juice to make a pineapple puree. I used a stick blender, but use a food processor or blender if that's what you have.
3 Whisk the egg whites until they are white and frothy (but still liquid - we're not making meringues here!)
4 Combine the pineapple puree, cold sugar syrup and egg whites, then finally stir in the double cream.
5 Pour the mixture into an ice cream maker and churn as per the manufacturer's instructions. When done, you can store this in the freezer for up to a month.
Alternatively, pour your mixture into a freezer box and freeze for 3-4 hours. If you are doing it this way, make sure you stir the ice cream well every half hour or so, to stop ice crystals forming in your ice cream.
Enjoy!