Strawberry and Mixed-Berry Jam

I am slowly but surely getting better at jam and jelly making.  Granted, I haven’t practiced a lot, because we are just now starting to get enough fruit to process.  But I have practice quite a big on jalapeno jelly, and last summer, with tomato jam (it is delicious … trust me).

Now, I am tackling berry jams.  Most recently, Strawberry Jam and Mixed Berry Jam, using our own strawberries, raspberries and blackberries.

They are both delicious, as only homemade jam can be, but I think I prefer the mixed berry jam, as it isn’t quite as sweet.  Trying to capture the beautiful color in this picture … didn’t really work.  🙂

However, the next time I make jam, I am going to try a trick I just learned for getting that pesky foam off the top … adding 1/2 t. butter to the recipe.  Has anyone else tried this?  Does it work?