Wash, peel, quarter, core, and dice the pears. Place the diced pears in a saucepan with the sugar and lemon juice.
Heat the contents of the pan gently, stirring constantly, and let the pears evaporate. Blend thoroughly with an immersion blender. Some small pieces may remain. The jam should simmer for at least 5 minutes to set. Before the jam sets, add the flavorings and stir thoroughly. Pour into hot, rinsed 250 ml jars and turn upside down.