Initially, I wanted to create this recipe using frozen strawberries (thawed) for a big strawberry flavor and to get chunks of berries throughout the ice cream. But adding a lot of fruit to this recipe caused it to be very icy and not very creamy (because of the high water content in fresh berries). Using strawberry jam gives you real strawberry flavor, but none of the iciness! You can also use freeze-dried strawberries crushed into a powder using an immersion blender, or strawberry jello powder. If you have lots of strawberries to use up, you can always make your own homemade strawberry jam, or cook them down with sugar and a bit of corn starch, and use it in this recipe.