Heat 1 cup blueberries in microwave about 30 seconds or until heated and soft

Press through a strainer to remove skin

Heat remaining 1/4 cup blueberries for 8-10 seconds these will be put in the ice cream whole

In mixer bowl whip heavy cream on high until medium to stiff peaks

Slowly add in the sweetened condensed milk and vanilla to the heavy cream

In a loaf pan layer the ice cream mixture place dollops of pressed blueberries and swirl it with a toothpick or back of a spoon to gently mix in, then add a few heated blueberries and repeat.

If you'd like the ice cream to be all "purple" in color, go ahead and mix the pressed blueberries into the ice cream mixture completely.

Freeze for 4-6 hours or until firm.

Add more blueberries if you aren't using blueberry extract.

As with any fruit dessert, delicious tasting fruit will result in great tasting results. If the fruit is not very sweet or not full of flavor, add a tablespoon of powdered sugar at a time until the taste of the mixture is great. Adding lemon and sugar together will also result in great flavor, as well as lemon extract too.