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Poslfit Recipes: Wild Blueberry Ice Cream

Rated 5/5 based on 3 family/friend reviews
Preparation time: 20 minutes
Cooking time: 24 hours
110 g (½ c.) sugar (Any white sugar that easily dissolves in milk)
2 large eggs (Large eggs weigh at least 57 g in their shell, or 50 g without; you want to roughly match the weight of the sugar)
240 mL (1 c.) whole milk (At least 3% butterfat)
240 mL (1 c.) whipping cream (35% butterfat)
1.75 mL (⅓ tsp.) vanilla extract (Yes, it’s hard to measure such small quantities)
100 g (¼ lb.) wild blueberries (I.e., the tiny ones that are only available for a few weeks locally in the summer)
[photo of wild blueberry ice cream in a rectangular plastic container]
This is an original recipe to our household, invented in the summer of 2020. It’s not hard to make your own ice cream recipes, and it’s worth doing as follows when making ice cream for the first time with a new ingredient. Take a small steel container like a cup or a bowl, and put it in the coldest part of your coldest freezer. It needs to be big enough to stir a small quantity of ice cream custard without spilling, and the heavier it is the better it will pull heat out of the custard; metal is also better than plastic for transferring heat. Make the custard according to the recipe, and transfer a measured 60 g (2 oz.) of it to the chilled steel container in your freezer. Add a measured quantity of your flavouring ingredients (say crushed cultivated blueberries and vanilla), and stir in thoroughly. Every ten minutes, take a spoon and stir the custard. At about 30 minutes, it should start sticking to the container; be sure to scrape it thoroughly. At about an hour, you should have soft ice cream. Taste it, adjust the proportion of your flavouring ingredients as needed, and prepare the rest of the recipe.
Whisk the sugar thoroughly into the eggs in a medium mixing bowl. I used to use a hand mixer, but a fork works just as well and is easier to clean.
Bring the milk to a simmer in a heavy medium saucepan.
Pour the milk as slowly as you can into the eggs and sugar, stirring constantly to keep it from cooking the eggs. You now have a custard.
Pour the custard back into the saucepan on low heat and stir constantly until... this is the tricky part. If you heat the eggs too much, they will scramble, and you will have to start over again. If you don’t heat the eggs at all, and your eggs carried salmonella, your ice cream will be contaminated. The standard advice is to heat them until the custard thickens slightly, which can take a little while. Alternately, you can use a Thermapen and a food safety chart based on local guidance about egg safety.
Pour the custard through a strainer (unless you are very sure you haven’t overcooked it, but why risk it?) into a large, clean container. While it is cooling slightly, use a spoon to crush the wild blueberries, then stir the whipping cream, vanilla, and wild blueberries into the custard.
Cover the container and put it in the fridge until it’s cold; you can leave it there overnight. You may be tempted to skip this step; you can, but it will negatively affect the texture of the final product.
Set up your ice cream maker, then transfer the container to the coldest part of your coldest freezer, and leave it there for 30 minutes. Again, do not skip this step: to get the best texture, you want the custard to be just barely not frozen when it goes into the machine. Prefreezing the custard will minimize how long it is exposed to room temperature, and therefore the formation of large ice crystals.
Process the custard in the ice cream maker until it turns into soft ice cream. This should take only 10–15 minutes because of the prefreezing you did.
Transfer the soft ice cream immediately to the coldest part of your coldest freezer for at least two hours to let it set. You can leave it in for days instead if it’s more convenient.
Transfer the ice cream to a warmest part of your warmest freezer to let it soften to a comfortable eating texture.