The classic ratio of making the perfect jam is that the quantity of the sugar should be half of the fruit. This formula is one of the most common methods with great results, which ends up with a well-balanced flavor and texture.

INGREDIENTS:

1 Pound of blueberry

1/2  Pound of granulated sugar

1/2 Lemon juice

1 Tablespoon lemon zest 

STEPS:

First, in a wide saucepan on medium heat, add the blueberries and sugar, then stir together to combine, add the lemon juice and lemon zest.

Keep stirring frequently by smashing the blueberries with the spatula to release their juices, then cook until the mixture starts boiling gently.

It is going to start to thicken about 20 to 30 minutes from steady boiling, making sure to keep stirring constantly.

Finally, you will know that the jam is ready when the mixture is thick enough and when you run your finger through the jam behind the spoon, leaving an open track which means that the jam is set and ready.