This is one of our favourite jams and it taste just like cherry pie filling! I make it with sour red cherries. They have a different (better for jam) flavour than the black sweet cherries. It's almost a different fruit.
This jam is made with a little almond extract added. The Almond gives the cherries a great flavour boost and is often added to commercial cherry pies. We love it! Almond is one of my personal favourite flavours and gets added to a lot of things. It really goes well with cherry. I have had a lot of compliments when serving this jam.
The first thing I do is pit the cherries. You can do this with a cherry pitter but I prefer to just use my hands. I discovered this quick and easy method when we made dozens and dozens of jars of cherry jam for sale in the orchard store in years past. Using a pitter is just not feasible for more than a few cups of cherries.
I freeze the cherries first. It is necessary to make them soft enough to push the pits out. It also helps break down the cell walls to release the juice. I learned that when making wine years ago. It works for other fruits as well, especially dry things like rhubarb.

When the cherries are all pitted, I run a hand blender through them until they are all finely chopped. I have also, on occasion, squeezed out the pulp as dry as I could get it with my hands, placed it on a cutting board and chopped it, when I didn't have a blender. That works too, but the blended jams are smoother. I blend most of the jams I make. We just like the smooth jams better, personally, than ones with chunky fruit pieces in them. You can always make both kinds and label them "smooth" or "chunky", like peanut butter. We made and sold a lot of jams in our store in the orchard and most people preferred the smooth ones.
Recipe:
4 cups chopped, pitted cherries in juice
4 1/2 cups sugar
2 teaspoons lemon juice
1/4 teaspoon pure almond extract
1 small box powdered pectin (Certo)
IMPORTANT NOTE: Do not multiply this recipe. It will not gel unless you make it one recipe with 4 cups of cherries at a time.
Put the 4 cups of cherries in a pot with a lot of room at the top and put on the stove at medium heat. Stir often to keep the cherries from scorching on the bottom. Add 2 teaspoons of lemon juice, 1/4 teaspoon of pure almond extract and one small box of pectin powder. DO NOT add the sugar at this stage. Stir and blend well (I use a whisk for this). I use generic, no name pectin most often. I have used Certo and Family Value. They all work the same if making full sugar jam. Just make sure you follow the directions closely. DO NOT add the sugar too soon with the pectin. If you do, it won't gel properly.

Pour into sterile, hot jam/canning jars. Top with sterile seals and rings. Boil in a water bath for a full 10 minutes. Remove and let cool. Remove rings before storing.
NOTE: I use bleach water to sterilize everything, i.e. jars, seals, rings, spoons, strainers, funnels, lifters. I slid into making jams and jellies from years of making my own organic wines, so aseptic techniques are a habit for me. I sterilize everything used for canning anything and for making things with yeast or bacteria culture, such as yogurt, buttermilk or soft cheese. Bleach works well if thoroughly rinsed. If you don't rinse it well enough, it will kill the yeast and/or bacteria you are trying to grow. Not as necessary in jam making, however. Still...rinse well. You don't want jams that taste like bleach either.

If you make cherry jam that doesn't gel, just call it "syrup". Cherry syrup is fantastic on waffles, pancakes, yogurt and ice cream! Try a little in your coffee too!