Pour lemon juice and wait 30 minutes to an 1 hour.
Pour the mixture into a thick pot on low-medium heat, and stir to prevent scorching.
In 5 minutes, you will see a delicious looking sauce.
It will thicken in 10 minutes. It's done! When it slightly cools, bottle into a sterilized jar.
I don't cook it down, so I try to use it up within 10 days of refrigerating.
I use it like this. Fluffy Cream Cheese Pancake (Recipe ID: 2317760).
Story Behind this Recipe
I often make this blueberry jam. I always guess the recipe amount, but I went blueberry picking, so made a note of this recipe.
-When you stir with a wooden spatula to prevent scorching, be careful not to break the blueberries. -Please adjust the sugar amount to your taste. We often use the preserves for French Toast, so we make it with 60~70 g of sugar.